CN104751857A - 具有反铁磁层的磁性读取磁头 - Google Patents
具有反铁磁层的磁性读取磁头 Download PDFInfo
- Publication number
- CN104751857A CN104751857A CN201410566845.7A CN201410566845A CN104751857A CN 104751857 A CN104751857 A CN 104751857A CN 201410566845 A CN201410566845 A CN 201410566845A CN 104751857 A CN104751857 A CN 104751857A
- Authority
- CN
- China
- Prior art keywords
- layer
- afm
- magnetic
- pinning
- outstanding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3909—Arrangements using a magnetic tunnel junction
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3163—Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3912—Arrangements in which the active read-out elements are transducing in association with active magnetic shields, e.g. magnetically coupled shields
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/398—Specially shaped layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/11—Magnetic recording head
- Y10T428/1107—Magnetoresistive
- Y10T428/1114—Magnetoresistive having tunnel junction effect
Abstract
提供具有突出的AFM层和延长的钉扎层的隧穿磁阻(TMR)读取传感器以及制造该传感器的方法。TMR读取传感器具有AFM层，该AFM层从空气轴承表面凹陷，从而提供减小的屏蔽到屏蔽距离。
Description
相关申请案的交叉参考
本申请案主张2013年10月23日递交的第61/894,550号(代理人案号F6672.P)的美国临时申请案的权益，所述申请案以全文引用的方式并入本文中。
背景技术
在磁性存储装置(例如，硬盘驱动器(HDD))中，读取磁头和写入磁头用于磁性地从存储介质读取信息以及将信息写入到存储介质中。在HDD中，数据可以在可被称为数据磁道的一系列邻近的同心圆中被存储在一或多个磁盘上。HDD可以包含：旋转式致动器；悬架，其安装在旋转式致动器的臂上；以及滑块，其结合到悬架上以形成磁头万向节组合件(HGA)。在传统的HDD中，滑块承载写入磁头和读取磁头，并且在伺服控制系统的控制下在存储介质(例如，磁盘)的表面上径向滑动，伺服控制系统选择性地将磁头定位在磁盘的特定磁道上方。在此一个读取磁头(读取器)配置中，读取器在磁道的中心上方对齐以用于数据读回。
由于HDD存储能力已增加，因此数据磁道间隔已减小并且密度已增大。增大的磁记录密度需要较窄的磁道宽度以及读取磁头上的较窄的屏蔽到屏蔽(S-S)间距。当前的隧道磁阻(TMR)读取磁头可以包含于其他元件、耦合到反铁磁(AFM)层的被钉扎层之中。TMR读取磁头可以进一步包括通过势垒层与钉扎层分离的自由层。在当前的垂直磁记录(PMR)读取磁头中，存在极少空间(如果存在的话)，从而由于钉扎层下方的AFM钉扎材料的存在而进一步减小S-S间距。通过移除AFM层而使S-S间距变窄的尝试已经是不成功的，因为不含AFM的TMR读取磁头普遍的是双向磁性的。
附图说明
在附图的图式中借助于示例而非限制来说明本发明，其中：
图1说明常规的读取传感器；
图2是说明根据各种实施例执行的用于制造TMR读取传感器的示例过程的操作流程图；
图3A到图3D说明根据各种实施例的TMR读取传感器的各个制造阶段；
图4A和图4B说明根据一个实施例的示例TMR读取传感器；以及
图5A到图5C说明根据各种实施例的额外的示例TMR读取传感器。
具体实施方式
在下文的描述中，阐述了大量具体细节，例如具体层组合物和特性的示例，以便提供对本发明的各种实施例的透彻理解。然而，对于所属领域的技术人员而言显而易见的是，不必采用这些具体细节来实践本发明的各种实施例。在其它情况下，并未详细描述众所周知的组件或方法以避免不必要地混淆本发明的各种实施例。
如本文所使用的，术语“上方”、“下方”、“在……之间”以及“在……上”是指一个介质层相对于其它层的相对位置。因此，举例来说，安置在另一层上方或下方的一个层可以与该另一层直接接触或者可以具有一个或多个介入层。此外，安置在两个层之间的一个层可以与该两个层直接接触或者可以具有一个或多个介入层。相比之下，“位于第二层上的第一层”与该第二层接触。另外，一个层相对于其它层的相对位置是在假定操作是相对于衬底执行的情况下来提供的，而无需考虑衬底的绝对定向。
在常规的TMR读取传感器(例如在图1的空气轴承表面(ABS)透视图中所说明的TMR读取传感器100)中，第一屏蔽层S1可以安置在衬底上方。第一屏蔽层S1可以包括也称为坡莫合金(permalloy)的镍铁(NiFe)合金，或用于TMR读取传感器的另一磁屏蔽材料。在一些情况下，第一屏蔽层S1可以由单种屏蔽材料组成。在其它情况下，第一屏蔽层S1可以具有复合结构。举例来说，第一屏蔽层S1可以包括NiFe、NiFe多层、钴铁(CoFe)，或钌(Ru)的一个或多个层。
在第一屏蔽层S1顶上可以安置籽晶层以及AFM层。籽晶层可以包括钽(Ta)、Ru、Ta/Ru双层或其它常规籽晶层。AFM层可以包括各种反铁磁材料，例如IrMn、铂锰(PtMn)、钯锰(PdMn)、镍锰(NiMn)、铑锰(RhMn)，或RhRuMn。IrMn通常用于TMR AFM层中，因为它提供比其它材料更薄的AFM层。
另外，AFM钉扎层可以安置在籽晶层上。AFM钉扎层在特定方向上通过AFM层磁性钉扎，并且可以包括CoFe的第一钉扎层P1，其提供AFM层与第二钉扎层P2之间的材料过渡。在其它情况下，钉扎层可以包括三层体：软磁材料(例如，CoFe)的第一层；Ru、Cr、Ag或Au或其它合适的非磁性材料的第二层；以及软磁材料(例如，CoFe)的第三层。
TMR读取传感器100进一步包括自由层，该自由层通过势垒层与钉扎层分离并且通过罩盖层(capping layer)与第二(顶部)屏蔽层S2分离。自由层包括铁磁性材料，例如，NiFe、CoFe或CoNiFe。势垒层包括绝缘材料，并且可以经选定以提供用于自由层的籽晶层。举例来说，氧化镁(MgO)可用作势垒层。罩盖层隔离自由层与顶部屏蔽层并且包括非磁性材料，例如，Ru、Ta，或其双层。顶部屏蔽S2安置在TMR读取传感器层上方，并且还可以包括NiFe或用于TMR读取传感器的其它常规材料。举例来说，顶部屏蔽S2可以具有类似于第一屏蔽S1的组合物。另外，TMR读取传感器100可以包含反铁磁耦合的柔软偏置(AFC SB)结构，用于磁性偏置自由层。如图2中所说明的，S-S是在ABS处第一屏蔽S1与第二屏蔽S2之间的距离，该距离在此常规实例中是近似25-26nm。
根据各种实施例，提供实现超薄S-S间距的读取磁头架构和制造方法。在各种实施例中，可以包含铱锰(IrMn)的AFM钉扎层可以从TMR膜堆叠的钉扎层的底部移除，因此减小两个屏蔽间隔，同时将AFM钉扎层突出(tabbing)到其余的TMR膜堆叠的任一侧，但是位于“延长”的钉扎层下方。经制造以具有根据各种实施例的此类架构的读取磁头可以保持较强的AFM钉扎强度并且可以更易于制造，其中此类实施例可以在不足20nm薄的S-S间距下针对1Tb/in2超高密度磁记录头而提供。
图2是说明根据各种实施例的示例方法200的操作流程图，可以执行示例方法200以制造具有超薄S-S间距的TMR读取传感器。方法200可以开始于操作210，其中形成第一屏蔽层。第一屏蔽层可以具有单个屏蔽材料结构或复合结构。第一屏蔽层可以包括NiFe、NiFe多层、CoFe或Ru的一或多个层。在操作220中，在第一屏蔽层上沉积籽晶层。籽晶层可以包括Ta、Ru、Ta/Ru双层或其它常规籽晶层。在操作230中，在籽晶层上方形成突出的AFM堆叠层。突出的AFM堆叠层可以包括各种反铁磁材料，例如，IrMn、PtMn、PdMn、NiMn、RhMn或RhRuMn。在操作240中，在AFM堆叠层上方形成钉扎层。钉扎层可以具有例如三层结构，其中第一和第二钉扎层可以是CoFe，其具有非磁性材料，例如，Ru、Cr、Ag或Au，或使第一与第二钉扎层分离的其它合适的非磁性材料。在操作250中，在钉扎层上方形成自由层。自由层可以包括非磁性材料，例如，Ru、Ta，或其双层。在操作260中，形成第二屏蔽层。第二屏蔽层可以具有单个屏蔽材料结构或复合结构。第二屏蔽层可以包括NiFe、NiFe多层、CoFe或Ru的一或多个层。
根据各种实施例，AFM层可以定位在读取磁道的任一侧上，其凹陷到第一屏蔽层中并且充当到钉扎层的底部突起。如下文将描述的，在一些实施例中，AFM层可以基本上是U形或马蹄形。然而，在其它实施例中，AFM层可以采用其它形状/配置，例如，半圆形形状，只要可以维持所需的超薄S-S间距即可。AFM突起可以使用类似于硬偏置掩模的掩模形成，但是具有比读取器TW更宽的中心磁道。此类架构可以产生比常规结构薄很多的S-S间距。在一个实施例中，S-S间距更薄约7nm，而钉扎层仍然由AFM钉扎层在两侧上的钉扎层下方磁性钉扎。
图3A到图3D说明根据一个实施例的各种制造阶段，图3A说明其中籽晶层320被沉积在第一屏蔽层310上的制造阶段，籽晶层320包括光刻过程可用于通过类似于硬偏置掩模但是具有更宽的中心磁道以便留下足够量的第一屏蔽层310以保持其屏蔽特性的掩模界定AFM突起区域。随后可以采用离子铣削以移除暴露的籽晶层320以产生凹部，如图3B中所说明的，之后通过原位离子束沉积或非原位物理气相沉积(PVD)的的AFM堆叠沉积，如图3C中所说明的，其中示出AFM层340(IrMn)和软磁缝合层350(CoFe)。也就是说，AFM层(即，AFM突出区域)可以放置在读取磁道的任一侧上，其可以充当到钉扎层的底部突起，其中AFM突起具有比读取器磁道宽度更宽的中心磁道。原位离子束沉积可以是指紧随TMR籽晶层的铣削之后无需破坏真空的AFM膜堆叠沉积。非原位PVD可以是指在单独的轮次/阶段通过各阶段之间的空气暴露执行TMR籽晶层铣削和AFM膜堆叠沉积。在光阻剂330移走之后，抛光角铣削可以被用于表面平坦化以形成用于不含AFM的TMR堆叠沉积的平坦且平滑的表面。沉积可以在溅镀腔室中进行，并且TMR堆叠，P1/Ru/P2(360)MgO/FL(370)/Cap(380)可以无缝缝合到所形成的AFM底部突起上，如图3D中所说明的。AFM突起与TMR堆叠之间的相对平坦且平滑的界面由上述过程产生，并且可以遵循标准读取器过程，例如，磁性退火、读取器接合形成、SB沉积等。应注意，产生了AFM突起与钉扎层之间的强AFM钉扎，以及钉扎层的P1与P2层之间的强反铁磁耦合(AFC)。还应注意，读取器接合通过离子束局部铣削形成以沿ABS方向产生延长的钉扎层，其由底层AFM突起从两侧钉扎。
图4A到图4B说明根据各种实施例的示例TMR读取传感器，该传感器被制造成具有实现超薄S-S间距的架构。图4A和图4B说明TMR读取传感器400，其中AFM钉扎层420基本上是U形或马蹄形。对于所属领域的技术人员而言显而易见的是，各个实施例可以包含其它形状并且不限于U形设计。在一个实施例中，AFM钉扎层420是IrMn，并且可以安置在屏蔽410-1上方。在AFM钉扎层420上方可以沉积钉扎层。在此示例中，钉扎层分别包含第一钉扎层430和第二钉扎层440以及产生诸如三层结构的非磁性材料435。势垒层450可以安置在钉扎层上方，并且势垒层450可以是例如MgO。TMR读取传感器400还可以包含自由层460和屏蔽410-2，以及AFC SB结构470。如可以理解的，由于AFM钉扎层420具有U形形状，因此屏蔽410-1与410-2之间的S-S间距可以减少。
图5A到图5C说明根据各种实施例制造以具有超薄S-S间距的其它示例TMR读取传感器结构。图5A说明TMR读取传感器500a，其具有第一屏蔽层510-1和基本上U形的AFM钉扎层520，AFM钉扎层520是IrMn。安置在AFM钉扎层520上方的是钉扎层，其具有三层结构(例如，P1530/Ru 535/P2540)。然而，P1530层的中心部分可以具有基本上类似梯形的ABS透视横截面(中心读取磁道)，势垒层550和自由层560(其中的每一者具有基本上类似梯形的ABS透视横截面)可以沉积在其上。TMR读取传感器500a进一步包含AFC SB结构570和第二屏蔽层510-2。应注意，在U形AFM层520的相应边缘与TMR堆叠的中心部分之间存在至少30nm的距离。根据一个实施例，TMR读取传感器500a的第一屏蔽层510-1可以包含多个薄的非磁性层525(在此示例中是两个)。薄的非磁性层525可以是Ru、Cr或其它非磁性材料，每一者具有诸如到之间的厚度。在高频率下，第一屏蔽层510-1(例如，坡莫合金/NiFe)渗透性可能不是最佳的。因此，非磁性层525可用于层压第一屏蔽层510-1，这导致高得多的渗透性，从而产生更好的屏蔽特征/有效性。
图5B说明TMR读取传感器500b，所述传感器具有第一屏蔽层510-1和第二屏蔽层510-2。沉积在第一屏蔽层510-1上的是AFM层520。安置在AFM层520上方的是基本上U形的第一钉扎层，该第一钉扎层包含钉扎层530-1和530-2。沉积在第一钉扎层上方的是第二钉扎层，该第二钉扎层包含由诸如Ru层535间隔开的钉扎层530-3与530-4。沉积在第二钉扎层上的可以是MgO的势垒层550和自由层560。类似于图5A，AFC SB结构570可以安置在第二钉扎层上，第二屏蔽层510-2安置在该AFC SB结构570上方。自由层560的边缘与AFM层520之间的距离可以是30-50nm。
应注意，在图5A的TMR读取传感器500a与图5B的TMR读取传感器500b之间仅有若干接合制造过程和堆叠布置差异。三维AFM(IrMn)层形状是相同的，然而，在两种情况下，自由层的外边缘与FM层的边缘之间的交叉磁道距离约是100nm。
图5C说明根据各种实施例制造的又一TMR读取传感器500c，其具有第一屏蔽层510-1，籽晶层515安置在该第一屏蔽层510-1上。基本上U形的AFM钉扎层520可以安置在籽晶层515和第一屏蔽层510-1上方，AFM钉扎层520是IrMn。安置在AFM钉扎层520上方的是钉扎层，其具有三层结构(例如，P1530/Ru 535/P2540)。然而，P1530层的中心部分可以具有基本上类似梯形的ABS透视横截面，势垒层550和自由层560(其中的每一者具有基本上类似梯形的ABS透视横截面)可以沉积在其上。TMR读取传感器500a进一步包含AFC SB结构570和第二屏蔽层510-2，第二屏蔽层510-2包含另一AFM层575。类似于TMR读取传感器500a，第二屏蔽层510-2可以进一步包含薄的非磁性层565，例如，Ru、Cr等，其可以具有诸如到之间的厚度。
尽管上文就各种示例性实施例和实施方案进行了描述，但应理解，各个实施例中的一或多者中所描述的各种特征、方面和功能性在其适用性上并不限于与其一起描述的特定实施例，而是可单独或以各种组合应用于本申请案一个或多个其它实施例中，无论是否描述此类实施例且无论是否将此类特征呈现为所描述实施例的一部分。因此，本申请案的广度和范围不应由任何上述示例性实施例限制。
除非另有明确陈述，否则在本文档中使用的术语和短语及其变体应该被解释为开放性的，而非限制性的。作为上述内容的示例：术语“包含”应该被理解为意味着“包含但不限于”等；术语“示例”用于提供所论述的项目的示例性示例，而非其穷尽性或限制性列表；术语“一”或“一个”应该被理解为意味着“至少一个”、“一或多个”等；且诸如“常规的”、“传统的”、“通常的”、“标准的”、“已知的”等形容词以及类似含义的术语不应被解释将描述的项目限制到给定时间段或在给定时间内可用的项目，而是实际上应该被理解为涵盖现在或在将来任何时间可用的或已知的常规的、传统的、通常的或标准的技术。同样，虽然本文档参照对于所属领域的一般技术人员将是显而易见或已知的技术，但是此类技术涵盖现在或在将来任何时间对于所属领域的技术人员是显而易见或已知的那些技术。
在一些实例中，诸如“一个或多个”、“至少”、“但不限于”等拓宽性词语和短语的存在不应被理解为意味着在可能不存在此类拓宽性短语的情况下希望或需要较狭窄的情况。术语“模块”的使用并不暗示所描述的或所主张的作为所述模块的一部分的组件或功能都配置在共同的封装中。实际上，模块的各种组件中的任一者或全部(无论是控制逻辑还是其它组件)可以组合在单个封装中或单独地维持并且可以进一步分布在多个分组或封装中或跨越多个位置。
另外，本文中阐述的各个实施例是就示例性框图、流程图和其它说明而描述。对于所属领域的一般技术人员而言在阅读本文档之后将变得显而易见的是，可以实施所说明的实施例和其各种替代方案而无需限制于所说明的实例。举例来说，框图和其随附描述不应被解释为要求特定的架构或配置。
Claims (20)
1.一种制造磁性读取磁头的方法，其包括：
形成第一屏蔽层；
在所述第一屏蔽层上沉积籽晶层；以及
在所述籽晶层上方形成突出的反铁磁堆叠层即AFM堆叠层，使得所述突出的AFM堆叠层导致沿所述磁性读取磁头的读取磁道的两侧凹陷。
2.根据权利要求1所述的方法，其进一步包括：
在所述AFM堆叠层上方形成第一和第二钉扎层；
在所述第一钉扎层上方形成自由层；以及
在所述第一钉扎层上方形成第二屏蔽层。
3.根据权利要求2所述的方法，其中所述第一钉扎层与所述第二钉扎层之间的间隙包括钌Ru。
4.根据权利要求3所述的方法，其中所述AFM堆叠层包括：
AFM层；以及
软磁缝合层。
5.根据权利要求4所述的方法，其中所述AFM堆叠层包括铱锰IrMn、铂锰PtMn或反铁磁材料中的一者。
6.根据权利要求4所述的方法，其中所述软磁缝合层包括铜铁CoFe、CoFe/镍铁NiFe、软磁材料或软磁材料组合中的一者。
7.根据权利要求3所述的方法，其中所述第一屏蔽层与所述第二屏蔽层之间的间距在10nm与18nm之间。
8.根据权利要求7所述的方法，其中所述第一屏蔽层与所述第二屏蔽层之间的间距在10nm与15nm之间。
9.根据权利要求1所述的方法，其中所述读取磁头是隧穿磁阻读取磁头即TMR读取磁头。
10.根据权利要求1所述的方法，其中所述籽晶层包括钽Ta、Ta/Ru、非磁性单层材料或经配置以促进突出的AFM堆叠层材料增长的非磁性多层材料中的一者。
11.根据权利要求1所述的方法，其中形成所述突出的AFM堆叠层包括：
在所述籽晶层上方界定光阻剂掩模；
对未被所述光阻剂掩模覆盖的所述籽晶层和第一屏蔽层进行离子铣削以形成用于所述AFM堆叠层的凹部；以及
沉积所述AFM堆叠层。
12.根据权利要求11所述的方法，其中形成所述突出的AFM堆叠层是原位或非原位执行的。
13.根据权利要求11所述的方法，其进一步包括沿中心读取磁道并且在所述突出的AFM堆叠层的两侧上方在所述籽晶层的其余部分的顶部上沉积TMR堆叠。
14.根据权利要求13所述的方法，其进一步包括对所述TMR堆叠和所述突出的AFM堆叠层进行退火，其中所述退火设定所述TMR堆叠的磁性钉扎方向。
15.一种磁性读取磁头，其包括：
第一屏蔽层；
籽晶层，其沉积在所述第一屏蔽层上；以及
突出的反铁磁堆叠层即AFM堆叠层，其形成在所述籽晶层上方，其中所述突出的AFM堆叠层沿所述磁性读取磁头的读取磁道的两侧凹陷。
16.根据权利要求15所述的读取磁头，其进一步包括：
第一和第二钉扎层，其沉积在所述AFM堆叠层上方；
自由层，其沉积在所述第一钉扎层上方；以及
第二屏蔽层，其沉积在所述第一钉扎层上方。
17.根据权利要求15所述的读取磁头，其中所述突出的AFM堆叠层包括：
AFM层；以及
软磁缝合层。
18.一种硬盘驱动器，其包括：
至少一个可旋转磁盘，其具有磁盘表面；
磁盘驱动器基底；
主轴马达，其附接到所述磁盘驱动器基底并且经配置以支撑所述磁盘相对于所述磁盘驱动器基底表面旋转所述磁盘；以及
磁性读取器，其经配置以读取所述可旋转磁盘表面上的数据，所述磁性读取器包括：
第一屏蔽层；以及
籽晶层，其沉积在所述第一屏蔽层上；以及
突出的反铁磁堆叠层即AFM堆叠层，其形成在所述籽晶层上方，其中所述突出的AFM堆叠层沿所述磁读取器的读取磁道的两侧凹陷。
19.根据权利要求18所述的硬盘驱动器，其中所述磁性读取器进一步包括：
第一和第二钉扎层，其沉积在所述AFM堆叠层上方；
自由层，其沉积在所述第一钉扎层上方；以及
第二屏蔽层，其沉积在所述第一钉扎层上方。
20.根据权利要求18所述的硬盘驱动器，其中所述磁性读取器包括隧穿磁阻读取器即TMR读取器。
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361894550P | 2013-10-23 | 2013-10-23 | |
| US61/894,550 | 2013-10-23 | ||
| US14/230,962 US9214172B2 (en) | 2013-10-23 | 2014-03-31 | Method of manufacturing a magnetic read head |
| US14/230,962 | 2014-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104751857A true CN104751857A (zh) | 2015-07-01 |
| CN104751857B CN104751857B (zh) | 2019-02-22 |
Family
ID=52825955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410566845.7A Active CN104751857B (zh) | 2013-10-23 | 2014-10-22 | 具有反铁磁层的磁性读取磁头 |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US9214172B2 (zh) |
| CN (1) | CN104751857B (zh) |
| HK (1) | HK1212092A1 (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889153A (zh) * | 2020-07-01 | 2022-01-04 | 西部数据技术公司 | 具有后硬偏置且不具有afm层的磁读传感器和相关方法 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9214172B2 (en) * | 2013-10-23 | 2015-12-15 | Western Digital (Fremont), Llc | Method of manufacturing a magnetic read head |
| US9666214B1 (en) * | 2015-09-23 | 2017-05-30 | Western Digital (Fremont), Llc | Free layer magnetic reader that may have a reduced shield-to-shield spacing |
| US10422829B2 (en) | 2016-06-27 | 2019-09-24 | International Business Machines Corporation | Diagnostics in TMR sensors |
| US9620154B1 (en) | 2016-09-08 | 2017-04-11 | International Business Machines Corporation | Characterization of dielectric breakdown in TMR sensors |
| US10229705B2 (en) | 2017-01-24 | 2019-03-12 | International Business Machines Corporation | Shorting tolerant tunnel valve head and circuit |
| US10997994B1 (en) | 2020-05-29 | 2021-05-04 | International Business Machines Corporation | Current-perpendicular-to-plane (CPP) read transducer structure having flux guide and pinned soft bias layer for stabilizing sensor and flux guide |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062425A (zh) * | 1990-12-11 | 1992-07-01 | 国际商业机器公司 | 基于自旋阀效应的磁致电阻传感器 |
| WO2000063715A1 (en) * | 1999-04-20 | 2000-10-26 | Seagate Technology Llc | Spin valve sensor with specular electron scattering in free layer |
| CN101958123A (zh) * | 2009-07-13 | 2011-01-26 | 希捷科技有限公司 | 具有垂直各向异性自由层和侧向屏蔽构件的磁传感器 |
| CN102544352A (zh) * | 2010-12-20 | 2012-07-04 | 希捷科技有限公司 | 具有横向钉扎的非易失性存储器单元 |
| CN102810318A (zh) * | 2011-05-06 | 2012-12-05 | 希捷科技有限公司 | 磁阻屏蔽体 |
| CN103310804A (zh) * | 2012-03-14 | 2013-09-18 | 希捷科技有限公司 | 磁传感器制造 |
Family Cites Families (640)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6078479A (en) | 1993-08-10 | 2000-06-20 | Read-Rite Corporation | Magnetic tape head with flux sensing element |
| US6219205B1 (en) | 1995-10-10 | 2001-04-17 | Read-Rite Corporation | High density giant magnetoresistive transducer with recessed sensor |
| US5801531A (en) | 1996-01-18 | 1998-09-01 | Read-Rite Corporation | Apparatus and method for testing magnetic heads using translational slides and a rotatable arm |
| JPH09235669A (ja) | 1996-02-27 | 1997-09-09 | Read Rite S M I Kk | 酸化膜の形成方法および電子デバイス |
| US5764451A (en) | 1996-03-28 | 1998-06-09 | Read-Rite Corporation | Multi-tapped coil having tapped segments casaded for amplification for improving signal-to-noise ratio |
| US5793550A (en) | 1996-04-23 | 1998-08-11 | Read-Rite Corporation | Magnetoresistive head using sense currents of opposite polarities |
| US6103073A (en) | 1996-07-15 | 2000-08-15 | Read-Rite Corporation | Magnetic thin film head zero throat pole tip definition |
| US6178150B1 (en) | 1996-07-30 | 2001-01-23 | Seagate Technology Inc. | Offset optics for use with optical heads |
| US6058094A (en) | 1996-07-30 | 2000-05-02 | Seagate Technology Inc. | Flying magneto-optical head with a steerable mirror |
| US6034938A (en) | 1996-07-30 | 2000-03-07 | Seagate Technology, Inc. | Data storage system having an optical processing flying head |
| US6081499A (en) | 1997-05-05 | 2000-06-27 | Seagate Technology, Inc. | Magneto-optical data storage system having an optical-processing flying head |
| US5612098A (en) | 1996-08-14 | 1997-03-18 | Read-Rite Corporation | Method of forming a thin film magnetic structure having ferromagnetic and antiferromagnetic layers |
| US5793279A (en) | 1996-08-26 | 1998-08-11 | Read-Rite Corporation | Methods and compositions for optimizing interfacial properties of magnetoresistive sensors |
| US6307715B1 (en) | 1996-08-30 | 2001-10-23 | Read-Rite Corporation | Head suspension having reduced torsional vibration |
| US5696656A (en) | 1996-09-06 | 1997-12-09 | International Business Machines Corporation | Highly sensitive orthogonal spin valve read head |
| US5717550A (en) | 1996-11-01 | 1998-02-10 | Read-Rite Corporation | Antiferromagnetic exchange biasing using buffer layer |
| JPH10143820A (ja) | 1996-11-08 | 1998-05-29 | Read Rite S M I Kk | インダクティブ／ｍｒ複合型薄膜磁気ヘッド |
| JPH10188222A (ja) | 1996-12-20 | 1998-07-21 | Read Rite S M I Kk | 複合型薄膜磁気ヘッド |
| US5758406A (en) | 1997-02-07 | 1998-06-02 | Read-Rite Corporation | Method for assembling and electrical testing of a magnetic head |
| US6173486B1 (en) | 1997-03-04 | 2001-01-16 | Read-Rite Corporation | Thin film magnetic head with self-aligned pole tips |
| US5859754A (en) | 1997-04-03 | 1999-01-12 | Read-Rite Corporation | Magnetoresistive transducer having a common magnetic bias using assertive and complementary signals |
| US6032353A (en) | 1997-05-15 | 2000-03-07 | Read-Rite Corporation | Magnetic head with low stack height and self-aligned pole tips |
| JPH113510A (ja) | 1997-06-10 | 1999-01-06 | Read Rite S M I Kk | 複合型薄膜磁気ヘッド |
| US6166891A (en) | 1997-06-30 | 2000-12-26 | Read-Rite Corporation | Magnetoresistive sensor for high temperature environment using iridium manganese |
| US5966800A (en) | 1997-07-28 | 1999-10-19 | Read-Rite Corporation | Method of making a magnetic head with aligned pole tips and pole layers formed of high magnetic moment material |
| US6775902B1 (en) | 1997-07-28 | 2004-08-17 | Western Digital (Fremont) Inc. | Method of making a magnetic head with aligned pole tips |
| US5966591A (en) | 1997-08-07 | 1999-10-12 | Read-Rite Corporation | Method and tool for handling micro-mechanical structures |
| US6073338A (en) | 1997-08-19 | 2000-06-13 | Read-Rite Corporation | Thin film read head with coplanar pole tips |
| US5898547A (en) | 1997-10-24 | 1999-04-27 | International Business Machines Corporation | Magnetic tunnel junction magnetoresistive read head with sensing layer as flux guide |
| US6188549B1 (en) | 1997-12-10 | 2001-02-13 | Read-Rite Corporation | Magnetoresistive read/write head with high-performance gap layers |
| US6275354B1 (en) | 1998-01-21 | 2001-08-14 | Read-Rite Corporation | Magnetic head with a toroidal coil encompassing only one yoke layer |
| US5996213A (en) | 1998-01-30 | 1999-12-07 | Read-Rite Corporation | Thin film MR head and method of making wherein pole trim takes place at the wafer level |
| US6108166A (en) | 1998-03-12 | 2000-08-22 | Read-Rite Corporation | Current-pinned spin valve sensor |
| US6043959A (en) | 1998-03-23 | 2000-03-28 | Read-Rite Corporation | Inductive write head formed with flat yoke and merged with magnetoresistive read transducer |
| US6136166A (en) | 1998-03-27 | 2000-10-24 | Read-Rite Corporation | Apparatus for producing a uniform magnetic field over a large surface area of a wafer |
| US6046885A (en) | 1998-04-03 | 2000-04-04 | Intri-Plex Technologies, Inc. | Base plate suspension assembly in a hard disk drive with step in flange |
| US6399179B1 (en) | 1998-04-03 | 2002-06-04 | Intri-Plex Technologies, Inc. | Base plate for suspension assembly in hard disk drive with stress isolation |
| US6034851A (en) | 1998-04-07 | 2000-03-07 | Read-Rite Corporation | Shorting bar and test clip for protecting magnetic heads from damage caused by electrostatic discharge during manufacture |
| US6137662A (en) | 1998-04-07 | 2000-10-24 | Read-Rite Corporation | Magnetoresistive sensor with pinned SAL |
| US6049650A (en) | 1998-04-17 | 2000-04-11 | Seagate Technology, Inc. | Structure for micro-machine optical tooling and method for making and using |
| US6055138A (en) | 1998-05-06 | 2000-04-25 | Read-Rite Corporation | Thin film pedestal pole tips write head having narrower lower pedestal pole tip |
| US6738236B1 (en) | 1998-05-07 | 2004-05-18 | Seagate Technology Llc | Spin valve/GMR sensor using synthetic antiferromagnetic layer pinned by Mn-alloy having a high blocking temperature |
| US6178066B1 (en) | 1998-05-27 | 2001-01-23 | Read-Rite Corporation | Method of fabricating an improved thin film device having a small element with well defined corners |
| JPH11354859A (ja) | 1998-06-05 | 1999-12-24 | Read Rite Smi Kk | 磁気抵抗素子と磁気ヘッド |
| US6018441A (en) | 1998-06-08 | 2000-01-25 | Read-Rite Corporation | Disk drive pivot bearing and actuator arm assembly |
| JPH11354860A (ja) | 1998-06-10 | 1999-12-24 | Read Rite Smi Kk | スピンバルブ磁気変換素子及び磁気ヘッド |
| US6130779A (en) | 1998-07-06 | 2000-10-10 | Read-Rite Corporation | Near field magneto-optical head made using wafer processing techniques |
| US6229782B1 (en) | 1998-07-06 | 2001-05-08 | Read-Rite Corporation | High numerical aperture optical focusing device for use in data storage systems |
| US6212153B1 (en) | 1998-07-06 | 2001-04-03 | Read-Rite Corporation | High NA solid catadioptric focusing device having a flat kinoform phase profile |
| US6377535B1 (en) | 1998-07-06 | 2002-04-23 | Read-Rite Corporation | High numerical aperture optical focusing device having a conical incident facet and a parabolic reflector for use in data storage systems |
| US6175476B1 (en) | 1998-08-18 | 2001-01-16 | Read-Rite Corporation | Synthetic spin-valve device having high resistivity anti parallel coupling layer |
| US6445536B1 (en) | 1998-08-27 | 2002-09-03 | Read-Rite Corporation | Dielectric stencil-defined write head for MR, GMR, and spin valve high density recording heads |
| JP2000091667A (ja) | 1998-09-09 | 2000-03-31 | Read Rite Smi Kk | スピンバルブ磁気抵抗センサ及び薄膜磁気ヘッド |
| US6181525B1 (en) | 1998-09-23 | 2001-01-30 | Read-Rite Corporation | Read/write head with a limited range of motion relative to a load beam |
| JP2000113437A (ja) | 1998-10-08 | 2000-04-21 | Read Rite Smi Kk | 磁気ヘッド装置の製造方法、磁気ヘッド装置、並びに、磁気ヘッド装置の中間製造物 |
| US6330136B1 (en) | 1998-10-14 | 2001-12-11 | Read-Rite Corporation | Magnetic read sensor with SDT tri-layer and method for making same |
| US6137661A (en) | 1998-10-19 | 2000-10-24 | Read-Rite Corporation | System for providing a magnetoresistive head having higher efficiency |
| US6252743B1 (en) | 1998-11-02 | 2001-06-26 | Read-Rite Corporation | Read/write positioning arm with interspaced amplifier chips |
| US6118638A (en) | 1998-11-02 | 2000-09-12 | Read-Rite Corporation | CPP magnetoresistive device and method for making same |
| US6333830B2 (en) | 1998-11-09 | 2001-12-25 | Read-Rite Corporation | Low resistance coil structure for high speed writer |
| US6198609B1 (en) | 1998-11-09 | 2001-03-06 | Read-Rite Corporation | CPP Magnetoresistive device with reduced edge effect and method for making same |
| JP2000149233A (ja) | 1998-11-11 | 2000-05-30 | Read Rite Smi Kk | 磁気ヘッド装置、並びに、その製造方法 |
| US6160684A (en) | 1998-11-12 | 2000-12-12 | Read-Rite Corporation | Head suspension having tabs and force isolation welds for gram load reduction during swaging |
| US6233116B1 (en) | 1998-11-13 | 2001-05-15 | Read-Rite Corporation | Thin film write head with improved laminated flux carrying structure and method of fabrication |
| US6452765B1 (en) | 1998-11-18 | 2002-09-17 | Read-Rite Corporation | CoNbTi as high resistivity SAL material for high-density MR |
| US6190764B1 (en) | 1998-11-23 | 2001-02-20 | Read-Rite Corporation | Inductive write head for magnetic data storage media |
| US6221218B1 (en) | 1998-11-23 | 2001-04-24 | Read-Rite Corporation | Method of forming an inductive write head for magnetic data storage media |
| JP2000163713A (ja) | 1998-11-27 | 2000-06-16 | Read Rite Smi Kk | 薄膜磁気ヘッドの上部磁極層の形成方法、段差を有する表面の段差底部上に高アスペクト比微細ブロックパターンを形成する方法、並びに、薄膜磁気ヘッド |
| US6633464B2 (en) | 1998-12-09 | 2003-10-14 | Read-Rite Corporation | Synthetic antiferromagnetic pinned layer with Fe/FeSi/Fe system |
| US6025988A (en) | 1998-12-17 | 2000-02-15 | Read-Rite Corporation | Interconnect adapter and head suspension assembly |
| US6258468B1 (en) | 1998-12-22 | 2001-07-10 | Read-Rite Corporation | AMR read sensor structure and method with high magnetoresistive coefficient |
| US6462920B1 (en) | 1998-12-23 | 2002-10-08 | Read-Rite Corporation | Method and system for reducing MR head instability |
| US6204999B1 (en) | 1998-12-23 | 2001-03-20 | Read-Rite Corporation | Method and system for providing a write head having a conforming pole structure |
| US6222707B1 (en) | 1998-12-28 | 2001-04-24 | Read-Rite Corporation | Bottom or dual spin valve having a seed layer that results in an improved antiferromagnetic layer |
| US6215625B1 (en) | 1999-01-04 | 2001-04-10 | Read-Rite Corporation | Apparatus and method for adhesive bridge suspension attachment |
| US6185077B1 (en) | 1999-01-06 | 2001-02-06 | Read-Rite Corporation | Spin valve sensor with antiferromagnetic and magnetostatically coupled pinning structure |
| JP2000207714A (ja) | 1999-01-13 | 2000-07-28 | Read Rite Smi Kk | 磁気抵抗効果型薄膜磁気ヘッド、並びに、その製造方法 |
| US6277505B1 (en) | 1999-01-21 | 2001-08-21 | Read-Rite Corporation | Read sensor with improved thermal stability and manufacturing method therefor |
| US6418000B1 (en) | 1999-01-21 | 2002-07-09 | Read-Rite Corporation | Dual, synthetic spin valve sensor using current pinning |
| US6094803A (en) | 1999-01-21 | 2000-08-01 | Read-Rite Corporation | Wafer processing techniques for near field magneto-optical head |
| JP2000222709A (ja) | 1999-02-01 | 2000-08-11 | Read Rite Smi Kk | スピンバルブ磁気抵抗センサ及び薄膜磁気ヘッド |
| US6351355B1 (en) | 1999-02-09 | 2002-02-26 | Read-Rite Corporation | Spin valve device with improved thermal stability |
| US6801411B1 (en) | 1999-02-10 | 2004-10-05 | Western Digital (Fremont), Inc. | Dual stripe spin valve sensor without antiferromagnetic pinning layer |
| US6629357B1 (en) | 1999-02-10 | 2003-10-07 | Read-Rite Smi Corp. | Method of magnetic head manufacture |
| US6178070B1 (en) | 1999-02-11 | 2001-01-23 | Read-Rite Corporation | Magnetic write head and method for making same |
| US6411478B1 (en) * | 1999-02-11 | 2002-06-25 | Seagate Technology Llc | Spin tunnel junction recording heads using an edge junction structure with CIP |
| US6469878B1 (en) | 1999-02-11 | 2002-10-22 | Seagate Technology Llc | Data head and method using a single antiferromagnetic material to pin multiple magnetic layers with differing orientation |
| US6016290A (en) | 1999-02-12 | 2000-01-18 | Read-Rite Corporation | Read/write head with shifted waveguide |
| US6404706B1 (en) | 1999-02-12 | 2002-06-11 | Read-Rite Corporation | Laser mounting for a thermally assisted GMR head |
| JP2000251223A (ja) | 1999-02-23 | 2000-09-14 | Read Rite Smi Kk | スピンバルブ磁気抵抗センサ及び薄膜磁気ヘッド |
| US6134089A (en) | 1999-03-11 | 2000-10-17 | Read-Rite Corporation | Current perpendicular to plane magnetoresistive device with low resistance lead |
| US6765756B1 (en) | 1999-03-12 | 2004-07-20 | Western Digital (Fremont), Inc. | Ultra-short yoke and ultra-low stack height writer and method of fabrication |
| US6691226B1 (en) | 1999-03-16 | 2004-02-10 | Western Digital Ventures, Inc. | Computer system with disk drive having private key validation means for enabling features |
| US6198608B1 (en) | 1999-03-18 | 2001-03-06 | Read-Rite Corporation | MR sensor with blunt contiguous junction and slow-milling-rate read gap |
| US6532823B1 (en) | 1999-03-18 | 2003-03-18 | Read-Rite Corporation | Insulator layers for magnetoresistive transducers |
| US6417998B1 (en) | 1999-03-23 | 2002-07-09 | Read-Rite Corporation | Ultra small advanced write transducer and method for making same |
| US6297955B1 (en) | 1999-03-31 | 2001-10-02 | Western Digital Ventures, Inc. | Host assembly for an integrated computer module |
| US6411522B1 (en) | 1999-04-01 | 2002-06-25 | Western Digital Ventures, Inc. | Integrated computer module with EMI shielding plate |
| US6445553B2 (en) | 1999-04-02 | 2002-09-03 | Read-Rite Corporation | Method and system for fabricating a high density magnetoresistive device |
| US6201673B1 (en) | 1999-04-02 | 2001-03-13 | Read-Rite Corporation | System for biasing a synthetic free layer in a magnetoresistance sensor |
| US6359779B1 (en) | 1999-04-05 | 2002-03-19 | Western Digital Ventures, Inc. | Integrated computer module with airflow accelerator |
| US6282056B1 (en) | 1999-04-08 | 2001-08-28 | Read-Rite Corporation | Tapered stitch pole writer for high density magnetic recording |
| US6490125B1 (en) | 1999-04-09 | 2002-12-03 | Read-Rite Corporation | Thin film write head with improved yoke to pole stitch |
| US6657816B1 (en) | 1999-04-09 | 2003-12-02 | Ronald A. Barr | Thin film inductive read/write head with a sloped pole |
| US6654195B1 (en) | 1999-04-27 | 2003-11-25 | Western Digital Ventures, Inc. | Disk drive having a register set for providing real time position variables to a host |
| US6944938B1 (en) | 1999-05-03 | 2005-09-20 | Western Digital (Fremont), Inc. | Method of forming a magnetoresistive device |
| US6829819B1 (en) | 1999-05-03 | 2004-12-14 | Western Digital (Fremont), Inc. | Method of forming a magnetoresistive device |
| JP2000315302A (ja) | 1999-05-06 | 2000-11-14 | Read Rite Smi Kk | 複合型薄膜磁気ヘッド |
| US6424505B1 (en) | 1999-05-06 | 2002-07-23 | Read-Rite Corporation | Method and system for providing electrostatic discharge protection for flex-on suspension, trace-suspension assembly, or cable-on suspension |
| US6271604B1 (en) | 1999-05-10 | 2001-08-07 | Western Digital Corporation | Integrated computer module having a data integrity latch |
| US6349014B1 (en) | 1999-05-14 | 2002-02-19 | Read-Rite Corporation | Magnetic read/write device with insulated coil layer recessed into pole |
| US6410170B1 (en) | 1999-05-20 | 2002-06-25 | Read-Rite Corporation | High resistivity FeXN sputtered films for magnetic storage devices and method of fabrication |
| US6296955B1 (en) | 1999-05-24 | 2001-10-02 | Read-Rite Corporation | High moment and high permeability transducer structures and formation |
| US6400526B2 (en) | 1999-05-26 | 2002-06-04 | Read-Rite Corporation | Advanced writer for chip-on-load beam |
| US6193584B1 (en) | 1999-05-27 | 2001-02-27 | Read-Rite Corporation | Apparatus and method of device stripe height control |
| US6466401B1 (en) | 1999-06-02 | 2002-10-15 | Read-Rite Corporation | Thin film write head with interlaced coil winding and method of fabrication |
| US6762910B1 (en) | 1999-06-03 | 2004-07-13 | Western Digital (Fremont), Inc. | Data storage and retrieval apparatus with thin film read head having inset extra gap insulation layer and method of fabrication |
| US6433970B1 (en) | 1999-06-07 | 2002-08-13 | Read-Rite Corporation | Structure and method for redeposition free thin film CPP read sensor fabrication |
| US6389499B1 (en) | 1999-06-09 | 2002-05-14 | Western Digital Ventures, Inc. | Integrated computer module |
| US6330137B1 (en) | 1999-06-11 | 2001-12-11 | Read-Rite Corporation | Magnetoresistive read sensor including a carbon barrier layer and method for making same |
| US6469877B1 (en) | 1999-06-15 | 2002-10-22 | Read-Rite Corporation | Spin valve device with improved exchange layer defined track width and method of fabrication |
| US6353511B1 (en) | 1999-06-15 | 2002-03-05 | Read-Rite Corporation | Thin film write head for improved high speed and high density recording |
| US6466402B1 (en) | 1999-06-18 | 2002-10-15 | Read-Rite Corporation | Compact MR write structure |
| US6310746B1 (en) | 1999-06-23 | 2001-10-30 | Read-Rite Corporation | Piezoelectric vibration damping for disk drives |
| US6185051B1 (en) | 1999-06-23 | 2001-02-06 | Read-Rite Corporation | High numerical aperture optical focusing device for use in data storage systems |
| US6181485B1 (en) | 1999-06-23 | 2001-01-30 | Read-Rite Corporation | High numerical aperture optical focusing device for use in data storage systems |
| US6292335B1 (en) | 1999-06-25 | 2001-09-18 | International Business Machines Corporation | Continuous junction spin valve read head stabilized without hard bias layers |
| US6219208B1 (en) | 1999-06-25 | 2001-04-17 | International Business Machines Corporation | Dual spin valve sensor with self-pinned layer specular reflector |
| US6185081B1 (en) | 1999-06-30 | 2001-02-06 | Read-Rite Corporation | Bias layers which are formed on underlayers promoting in-plane alignment of the c-axis of cobalt used in magnetoresistive transducers |
| US6687098B1 (en) | 1999-07-08 | 2004-02-03 | Western Digital (Fremont), Inc. | Top spin valve with improved seed layer |
| US7027268B1 (en) | 1999-07-08 | 2006-04-11 | Western Digital (Fremont), Inc. | Method and system for providing a dual spin filter |
| US6483662B1 (en) | 1999-07-09 | 2002-11-19 | Read-Rite Corporation | High density multi-coil magnetic write head having a reduced yoke length and short flux rise time |
| US7196880B1 (en) | 1999-07-19 | 2007-03-27 | Western Digital (Fremont), Inc. | Spin valve sensor having a nonmagnetic enhancement layer adjacent an ultra thin free layer |
| US6304414B1 (en) | 1999-07-20 | 2001-10-16 | Read-Rite Corporation | Thin film magnetic write head having an ultra-low stack height |
| US6611398B1 (en) | 1999-08-09 | 2003-08-26 | Quantum Corporation | Tape head with support bars |
| US6369983B1 (en) | 1999-08-13 | 2002-04-09 | Read-Rite Corporation | Write head having a dry-etchable antireflective intermediate layer |
| US6396660B1 (en) | 1999-08-23 | 2002-05-28 | Read-Rite Corporation | Magnetic write element having a thermally dissipative structure |
| US6381095B1 (en) | 1999-08-31 | 2002-04-30 | Read-Rite Corporation | High performance thin film magnetic write element having high Bsat poles and method for making same |
| US6317290B1 (en) | 1999-08-31 | 2001-11-13 | Read-Rite Corporation | Advance pole trim writer with moment P1 and low apex angle |
| US6452742B1 (en) | 1999-09-02 | 2002-09-17 | Read-Rite Corporation | Thin film write having reduced resistance conductor coil partially recessed within middle coat insulation |
| US6496330B1 (en) | 1999-09-09 | 2002-12-17 | Read-Rite Corporation | Magnetic write head having a splitcoil structure |
| US6421212B1 (en) | 1999-09-21 | 2002-07-16 | Read-Rite Corporation | Thin film read head structure with improved bias magnet-to-magnetoresistive element interface and method of fabrication |
| US6356412B1 (en) | 1999-09-30 | 2002-03-12 | Read-Rite Corporation | Air bearing facilitating load/unload of a magnetic read/write head |
| US6317297B1 (en) | 1999-10-06 | 2001-11-13 | Read-Rite Corporation | Current pinned dual spin valve with synthetic pinned layers |
| US6310750B1 (en) | 1999-10-20 | 2001-10-30 | Read-Rite Corporation | Disk drive actuator arm with microactuated read/write head positioning |
| US6381105B1 (en) | 1999-10-22 | 2002-04-30 | Read-Rite Corporation | Hybrid dual spin valve sensor and method for making same |
| US6448765B1 (en) | 1999-10-28 | 2002-09-10 | Read-Rite Corporation | Microscopic tips having stable magnetic moments and disposed on cantilevers for sensing magnetic characteristics of adjacent structures |
| JP2001126219A (ja) | 1999-10-28 | 2001-05-11 | Read Rite Corp | スピンバルブ型磁気抵抗センサ及び薄膜磁気ヘッド |
| US6456465B1 (en) | 1999-11-09 | 2002-09-24 | Read-Rite Corporation | Vertical giant magnetoresistance sensor using a recessed shield |
| US6661621B1 (en) | 1999-11-19 | 2003-12-09 | Read-Rite Smi Corp. | Compound thin film magnetic head |
| US6447935B1 (en) | 1999-11-23 | 2002-09-10 | Read-Rite Corporation | Method and system for reducing assymetry in a spin valve having a synthetic pinned layer |
| US6479096B1 (en) | 1999-12-03 | 2002-11-12 | Read-Rite Corporation | Method for manufacturing a GMR spin valve having a smooth interface between magnetic and non-magnetic layers |
| US6650506B1 (en) | 1999-12-15 | 2003-11-18 | Patrick Risse | Double-sided disk storage using a single configuration of magnetoresistive head |
| US6437945B1 (en) | 1999-12-28 | 2002-08-20 | Read-Rite Corporation | Airflow assisted ramp loading and unloading of sliders in hard disk drives |
| US7046490B1 (en) | 2000-01-06 | 2006-05-16 | Western Digital (Fremont), Inc. | Spin valve magnetoresistance sensor and thin film magnetic head |
| US6404601B1 (en) | 2000-01-25 | 2002-06-11 | Read-Rite Corporation | Merged write head with magnetically isolated poletip |
| US6417999B1 (en) | 2000-02-04 | 2002-07-09 | Read-Rite Corporation | Magnetoresistive head stabilized structure and method of fabrication thereof |
| US7023658B1 (en) | 2000-02-08 | 2006-04-04 | Western Digital (Fremont), Inc. | Submicron track-width pole-tips for electromagnetic transducers |
| US6721149B1 (en) | 2000-02-11 | 2004-04-13 | Western Digital (Fremont), Inc. | Tunneling magnetoresistance spin-valve read sensor with LaNiO3 spacer |
| US6724569B1 (en) | 2000-02-16 | 2004-04-20 | Western Digital (Fremont), Inc. | Thin film writer with multiplayer write gap |
| US6433965B1 (en) | 2000-03-02 | 2002-08-13 | Read-Rite Corporation | Laminated carbon-containing overcoats for information storage system transducers |
| US6445542B1 (en) | 2000-03-06 | 2002-09-03 | Read-Rite Corporation | Air bearing slider |
| US7059868B1 (en) | 2000-03-07 | 2006-06-13 | Western Digital (Fremont), Inc. | Connection of trace circuitry in a computer disk drive system |
| US6445554B1 (en) | 2000-03-10 | 2002-09-03 | Read-Rite Corporation | Method and system for providing edge-junction TMR for high areal density magnetic recording |
| US6353318B1 (en) | 2000-03-10 | 2002-03-05 | Read-Rite Corporation | Magnetoresistive sensor having hard biased current perpendicular to the plane sensor |
| US6466419B1 (en) | 2000-03-31 | 2002-10-15 | Seagate Technology Llc | Current perpendicular to plane spin valve head |
| JP2001308411A (ja) | 2000-04-11 | 2001-11-02 | Read Rite Corp | スピンバルブ型磁気抵抗センサおよび薄膜磁気ヘッド |
| US6433968B1 (en) | 2000-05-02 | 2002-08-13 | Read-Rite Corporation | Merged read/write head and method of fabricating same |
| US6552874B1 (en) | 2000-05-17 | 2003-04-22 | Read-Rite Corporation | Shared pole magnetic read-write head for achieving optimized erase band width and method of fabricating the same |
| US6496334B1 (en) | 2000-05-26 | 2002-12-17 | Read-Rite Corportion | Data storage and retrieval apparatus with thin film read head having planarized extra gap and shield layers and method of fabrication thereof |
| US6700759B1 (en) | 2000-06-02 | 2004-03-02 | Western Digital (Fremont), Inc. | Narrow track width magnetoresistive sensor and method of making |
| US6674610B1 (en) | 2000-06-16 | 2004-01-06 | Western Digital (Fremont), Inc. | Thin film write head with universal coil design |
| US6515573B1 (en) | 2000-06-19 | 2003-02-04 | Read-Rite Corporation | Method and system for providing edge-junction TMR utilizing a hard magnet as a pinned layer |
| US6430806B1 (en) | 2000-06-23 | 2002-08-13 | Read-Rite Corporation | Method for manufacturing an inductive write element employing bi-layer photoresist to define a thin high moment pole pedestal |
| US6512657B2 (en) | 2000-07-17 | 2003-01-28 | Read-Rite Corporation | Head suspension having gram load change reduction and method of assembly |
| JP2002033532A (ja) * | 2000-07-17 | 2002-01-31 | Alps Electric Co Ltd | トンネル型磁気抵抗効果型素子及びその製造方法 |
| US6618223B1 (en) | 2000-07-18 | 2003-09-09 | Read-Rite Corporation | High speed, high areal density inductive writer |
| US6512661B1 (en) | 2000-08-10 | 2003-01-28 | Read-Rite Corporation | Vertical giant magnetoresistance sensor utilizing an insulating bias layer |
| US6859997B1 (en) | 2000-09-19 | 2005-03-01 | Western Digital (Fremont), Inc. | Method for manufacturing a magnetic write element |
| US6989962B1 (en) | 2000-09-26 | 2006-01-24 | Western Digital (Fremont), Inc. | Inductive write head having high magnetic moment poles and low magnetic moment thin layer in the back gap, and methods for making |
| US6801408B1 (en) | 2000-11-02 | 2004-10-05 | Western Digital (Fremont), Inc. | Data storage and retrieval apparatus with thin film read head having a planar sensor element and an extra gap and method of fabrication thereof |
| US6807332B1 (en) | 2000-11-06 | 2004-10-19 | Western Digital (Fremont), Inc. | Piezoelectric actuated optical switch |
| US6958885B1 (en) | 2000-12-21 | 2005-10-25 | Western Digital (Fremont), Inc. | Insulation layer structure for inductive write heads and method of fabrication |
| US6738237B2 (en) | 2001-01-04 | 2004-05-18 | Hitachi Global Storage Technologies Netherlands B.V. | AP-pinned spin valve design using very thin Pt-Mn AFM layer |
| US6785955B1 (en) | 2001-01-23 | 2004-09-07 | Western Digital (Fremont), Inc. | Method for providing pedestal-defined zero throat writer |
| US6577470B1 (en) | 2001-01-25 | 2003-06-10 | Read-Rite Corporation | Method and system for providing a tape head subassembly structure having an integrated wear bar and outrigger rail |
| US6661625B1 (en) | 2001-02-20 | 2003-12-09 | Kyusik Sin | Spin-dependent tunneling sensor with low resistance metal oxide tunnel barrier |
| US6888184B1 (en) | 2001-02-23 | 2005-05-03 | Western Digital (Fremont), Inc. | Shielded magnetic ram cells |
| US6873547B1 (en) | 2001-02-23 | 2005-03-29 | Read Rite Corporation | High capacity MRAM memory array architecture |
| US6803615B1 (en) | 2001-02-23 | 2004-10-12 | Western Digital (Fremont), Inc. | Magnetic tunnel junction MRAM with improved stability |
| US6721203B1 (en) | 2001-02-23 | 2004-04-13 | Western Digital (Fremont), Inc. | Designs of reference cells for magnetic tunnel junction (MTJ) MRAM |
| US6552928B1 (en) | 2001-02-23 | 2003-04-22 | Read-Rite Corporation | Read-write control circuit for magnetic tunnel junction MRAM |
| US6687178B1 (en) | 2001-02-23 | 2004-02-03 | Western Digital (Fremont), Inc. | Temperature dependent write current source for magnetic tunnel junction MRAM |
| US6700738B1 (en) | 2001-03-16 | 2004-03-02 | Kyusik Sin | Read/write head coil tap having upper and lower portions |
| US7289303B1 (en) | 2001-04-05 | 2007-10-30 | Western Digital (Fremont), Llc | Spin valve sensors having synthetic antiferromagnet for longitudinal bias |
| US6829160B1 (en) | 2001-04-06 | 2004-12-07 | Western Digital (Fremont), Inc. | Magnetic ram cell with amplification circuitry and MRAM memory array formed using the MRAM cells |
| US6515791B1 (en) | 2001-04-06 | 2003-02-04 | Read-Rite Corporation | Active reflection and anti-reflection optical switch |
| US6597546B2 (en) | 2001-04-19 | 2003-07-22 | International Business Machines Corporation | Tunnel junction sensor with an antiferromagnetic (AFM) coupled flux guide |
| US6833982B2 (en) | 2001-05-03 | 2004-12-21 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic tunnel junction sensor with a free layer biased by longitudinal layers interfacing top surfaces of free layer extensions which extend beyond an active region of the sensor |
| US6704158B2 (en) | 2001-06-05 | 2004-03-09 | Western Digital (Fremont), Inc. | Shear mode multilayered collocated micro-actuator for dual-stage servo controllers in disk drives |
| US6376964B1 (en) | 2001-05-16 | 2002-04-23 | Read-Rite Corporation | Collocated rotating flexure microactuator for dual-stage servo in disk drives |
| US6760196B1 (en) | 2001-12-12 | 2004-07-06 | Western Digital, Inc. | Microactuator with offsetting hinges and method for high-resolution positioning of magnetic read/write head |
| US6680830B2 (en) | 2001-05-31 | 2004-01-20 | International Business Machines Corporation | Tunnel valve sensor and flux guide with improved flux transfer therebetween |
| US6870712B2 (en) | 2001-06-05 | 2005-03-22 | Western Digital (Fremont), Inc. | Inductive writer with flat top pole and pedestal defined zero throat |
| US6631055B2 (en) | 2001-06-08 | 2003-10-07 | International Business Machines Corporation | Tunnel valve flux guide structure formed by oxidation of pinned layer |
| US6798616B1 (en) | 2001-07-10 | 2004-09-28 | Western Digital (Fremont), Inc. | Write head architecture for improved manufacturability |
| JP3908554B2 (ja) | 2001-07-13 | 2007-04-25 | アルプス電気株式会社 | 磁気検出素子の製造方法 |
| US7349179B1 (en) | 2001-07-16 | 2008-03-25 | Western Digital (Fremont), Llc | Write head for improved manufacturability larger write field and reduced adjacent track erasure |
| US6683763B1 (en) | 2001-08-15 | 2004-01-27 | Western Digital (Fremont), Inc. | Method and system for providing a self-aligned electrical contact for a TMR element |
| US6418048B1 (en) | 2001-08-15 | 2002-07-09 | Read-Rite Corporation | Spin-dependent tunneling sensor suitable for a magnetic memory |
| US6512690B1 (en) | 2001-08-15 | 2003-01-28 | Read-Rite Corporation | High sensitivity common source amplifier MRAM cell, memory array and read/write scheme |
| US6809899B1 (en) | 2001-08-20 | 2004-10-26 | Western Digital (Fremont), Inc. | Magnetic heads for perpendicular recording with trapezoidal pole tips |
| JP2003069109A (ja) | 2001-08-30 | 2003-03-07 | Sony Corp | 磁気抵抗効果型磁気センサ、磁気抵抗効果型磁気ヘッド、磁気再生装置と、磁気抵抗効果型磁気センサおよび磁気抵抗効果型磁気ヘッドの製造方法 |
| US7027274B1 (en) | 2001-08-30 | 2006-04-11 | Western Digital (Fremont), Inc. | Spin-dependent tunneling read/write sensor for hard disk drives |
| US6762915B2 (en) * | 2001-09-05 | 2004-07-13 | Seagate Technology Llc | Magnetoresistive sensor with oversized pinned layer |
| US6791793B1 (en) | 2001-09-14 | 2004-09-14 | Western Digital (Fremont), Inc. | Perpendicular recording write head having a recessed magnetic adjunct pole and method of making the same |
| US6816345B1 (en) | 2001-09-24 | 2004-11-09 | Western Digital (Fremont), Inc. | Magnetoresistive sensors having submicron track widths and method of making |
| US6754049B1 (en) | 2001-10-16 | 2004-06-22 | Western Digital (Fremont), Inc. | Transducers for perpendicular recording with inductive cancellation at MR sensor |
| US6987643B1 (en) | 2001-10-23 | 2006-01-17 | Western Digital (Fremont), Inc. | Pole structure to relieve adjacent track writing |
| US6721138B1 (en) | 2001-10-24 | 2004-04-13 | Western Digital (Fremont), Inc. | Inductive transducer with stitched pole tip and pedestal defining zero throat height |
| US7054113B1 (en) | 2001-10-25 | 2006-05-30 | Western Digital (Fremont), Inc. | Reader/writer for magnetic memory |
| US6583968B1 (en) | 2001-10-31 | 2003-06-24 | Western Digital Technologies, Inc. | Spindle motor hub having equivalent MR read element bias voltage to mitigate potential between disk and MR read element |
| US7035062B1 (en) | 2001-11-29 | 2006-04-25 | Seagate Technology Llc | Structure to achieve sensitivity and linear density in tunneling GMR heads using orthogonal magnetic alignments |
| US6807030B1 (en) | 2001-12-18 | 2004-10-19 | Western Digital (Fremont), Inc. | Enclosed piezoelectric microactuators coupled between head and suspension |
| US6961221B1 (en) | 2001-12-18 | 2005-11-01 | Western Digital (Fremont), Inc. | Piezoelectric microactuators with substantially fixed axis of rotation and magnified stroke |
| US6737281B1 (en) | 2002-01-08 | 2004-05-18 | Western Digital (Fremont), Inc. | Method of making transducer with inorganic nonferromagnetic apex region |
| US6751055B1 (en) | 2002-01-08 | 2004-06-15 | Western Digital (Fremont), Inc. | Inductive transducer with reduced pole tip protrusion |
| US6888705B2 (en) | 2002-01-18 | 2005-05-03 | Hitachi Global Storage Technologies Netherlands B.V. | High linear density tunnel junction flux guide read head with in-stack longitudinal bias stack (LBS) |
| JP3811074B2 (ja) | 2002-01-22 | 2006-08-16 | アルプス電気株式会社 | 磁気検出素子及びその製造方法 |
| US6747301B1 (en) | 2002-02-06 | 2004-06-08 | Western Digital (Fremont), Inc. | Spin dependent tunneling barriers formed with a magnetic alloy |
| US6639291B1 (en) | 2002-02-06 | 2003-10-28 | Western Digital (Fremont), Inc. | Spin dependent tunneling barriers doped with magnetic particles |
| US6724572B1 (en) | 2002-02-28 | 2004-04-20 | Western Digital, Inc. | Inductive transducer with recessed leading pole layer |
| US7307814B1 (en) | 2002-03-01 | 2007-12-11 | Western Digital (Fremont), Llc | Pedestal defined zero throat writer having a recessed pedestal |
| US7151654B1 (en) * | 2002-03-12 | 2006-12-19 | Seagate Technology Llc | TMR head structure with conductive shunt |
| US6859343B1 (en) | 2002-03-19 | 2005-02-22 | Western Digital, Inc. | Hybrid diffuser for minimizing thermal pole tip protrusion and reader sensor temperature |
| US6757140B1 (en) | 2002-03-19 | 2004-06-29 | Western Digital, Inc. | Electrostatic microelectromechanical (MEM) microactuator for precise read/write head positioning |
| US7035046B1 (en) | 2002-03-19 | 2006-04-25 | Western Digital (Fremont), Inc. | System and method for minimizing thermal pole tip protrusion |
| JP4275347B2 (ja) | 2002-03-20 | 2009-06-10 | Ｔｄｋ株式会社 | 磁気検出素子 |
| US6744607B2 (en) | 2002-03-21 | 2004-06-01 | Hitachi Global Storage Technologies Netherlands B.V. | Exchange biased self-pinned spin valve sensor with recessed overlaid leads |
| US6865062B2 (en) | 2002-03-21 | 2005-03-08 | International Business Machines Corporation | Spin valve sensor with exchange biased free layer and antiparallel (AP) pinned layer pinned without a pinning layer |
| US6741432B2 (en) | 2002-03-21 | 2004-05-25 | International Business Machines Corporation | Current perpendicular to the planes (CPP) spin valve sensor with in-stack biased free layer and self-pinned antiparallel (AP) pinned layer structure |
| US6859348B2 (en) | 2002-03-21 | 2005-02-22 | Hitachi Global Storage Technologies Netherlands B.V. | Hard biased self-pinned spin valve sensor with recessed overlaid leads |
| US6856493B2 (en) | 2002-03-21 | 2005-02-15 | International Business Machines Corporation | Spin valve sensor with in-stack biased free layer and antiparallel (AP) pinned layer pinned without a pinning layer |
| US7370404B2 (en) | 2002-03-21 | 2008-05-13 | Hitachi Global Storage Technologies Netherlands B.V. | Method for resetting pinned layer magnetization in a magnetoresistive sensor |
| US6751072B2 (en) | 2002-03-21 | 2004-06-15 | Hitachi Global Storage Technologies Netherlands B.V. | High magnetoresistance spin valve sensor with self-pinned antiparallel (AP) pinned layer structure |
| US6785102B2 (en) | 2002-04-18 | 2004-08-31 | Hitachi Global Storage Technologies Netherlands B.V. | Spin valve sensor with dual self-pinned AP pinned layer structures |
| US6801412B2 (en) | 2002-04-19 | 2004-10-05 | International Business Machines Corporation | Method and apparatus for improved pinning strength for self-pinned giant magnetoresistive heads |
| US6873494B2 (en) | 2002-04-29 | 2005-03-29 | Western Digital (Fremont), Inc. | Write head with high moment film layer having tapered portion extending beyond write gap layer |
| US6778358B1 (en) | 2002-05-01 | 2004-08-17 | Western Digital (Fremont), Inc. | Magnetically soft, high saturation magnetization laminates of iron-cobalt-nitrogen and iron-nickel |
| US7522377B1 (en) | 2002-05-01 | 2009-04-21 | Western Digital (Fremont), Llc | Magnetic write head with high moment magnetic thin film formed over seed layer |
| US6744608B1 (en) | 2002-05-14 | 2004-06-01 | Western Digital (Fremont), Inc. | Method and system for making TMR junctions |
| US6942824B1 (en) | 2002-05-22 | 2005-09-13 | Western Digital (Fremont), Inc. | UV curable and electrically conductive adhesive for bonding magnetic disk drive components |
| US6909578B1 (en) | 2002-05-30 | 2005-06-21 | Western Digital (Fremont), Inc. | Method and system for reducing thermal pole tip protrusion |
| US7133253B1 (en) | 2002-06-03 | 2006-11-07 | Western Digital (Fremont), Inc. | Pole tip with sides flared at media-facing surface |
| US6680828B2 (en) | 2002-06-07 | 2004-01-20 | International Business Machines Corporation | Differential GMR head system and method using self-pinned layer |
| US6861937B1 (en) | 2002-06-25 | 2005-03-01 | Western Digital (Fremont), Inc. | Double winding twin coil for thin-film head writer |
| US6806035B1 (en) | 2002-06-25 | 2004-10-19 | Western Digital (Fremont), Inc. | Wafer serialization manufacturing process for read/write heads using photolithography and selective reactive ion etching |
| US6707083B1 (en) | 2002-07-09 | 2004-03-16 | Western Digital (Fremont), Inc. | Magnetic tunneling junction with improved power consumption |
| US6713801B1 (en) | 2002-07-09 | 2004-03-30 | Western Digital (Fremont), Inc. | α-tantalum lead for use with magnetic tunneling junctions |
| US6680863B1 (en) | 2002-07-09 | 2004-01-20 | Western Digital (Fremont), Inc. | MRAM memory array having merged word lines |
| US6781798B2 (en) | 2002-07-15 | 2004-08-24 | International Business Machines Corporation | CPP sensor with dual self-pinned AP pinned layer structures |
| US6912106B1 (en) | 2002-08-06 | 2005-06-28 | Western Digital (Fremont), Inc. | Writer with a hot seed zero throat and substantially flat top pole |
| US6975486B2 (en) | 2002-08-06 | 2005-12-13 | Western Digital (Fremont), Inc. | Thin film write head having a laminated, flat top pole with bottom shaper and method of fabrication |
| US6894871B2 (en) | 2002-08-07 | 2005-05-17 | Western Digital (Fremont), Inc. | Technique for reducing pole tip protrusion in a magnetic write head and GMR stripe temperature in an associated read head structure utilizing one or more internal diffuser regions |
| US6879464B2 (en) | 2002-08-16 | 2005-04-12 | Western Digital (Fremont), Inc. | Air bearing having a cavity patch surface coplanar with a leading edge pad surface |
| US7211339B1 (en) | 2002-08-22 | 2007-05-01 | Western Digital (Fremont), Inc. | Highly conductive lead adjoining MR stripe and extending beyond stripe height at junction |
| US6847510B2 (en) | 2002-09-27 | 2005-01-25 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic tunnel junction device with bottom free layer and improved underlayer |
| US6989972B1 (en) | 2002-09-30 | 2006-01-24 | Western Digital (Fremont), Inc. | Magnetoresistive sensor with overlapping leads having distributed current |
| US6934129B1 (en) | 2002-09-30 | 2005-08-23 | Western Digital (Fremont), Inc. | Magnetoresistive sensor with overlapping lead layers including alpha tantalum and conductive layers |
| US7038889B2 (en) | 2002-09-30 | 2006-05-02 | International Business Machines Corporation | Method and apparatus for enhanced dual spin valve giant magnetoresistance effects having second spin valve self-pinned composite layer |
| US6940688B2 (en) | 2002-10-21 | 2005-09-06 | Western Digital (Fremont), Inc. | Coil inductive writer having a low inductance and short yoke length |
| US6950266B1 (en) | 2002-10-28 | 2005-09-27 | Western Digital (Fremont), Inc. | Active fly height control crown actuator |
| US6891702B1 (en) | 2002-10-31 | 2005-05-10 | Western Digital Technologies, Inc. | Method and devices for providing magnetoresistive heads with protection from electrostatic discharge and electric overstress events |
| US7113366B1 (en) | 2002-11-07 | 2006-09-26 | Western Digital (Fremont), Inc. | Double-nosed inductive transducer with reduced off-track writing |
| US6958892B2 (en) | 2002-12-06 | 2005-10-25 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetoresistive sensor with a thin antiferromagnetic layer for pinning antiparallel coupled tabs |
| US6947264B2 (en) | 2002-12-06 | 2005-09-20 | International Business Machines Corporation | Self-pinned in-stack bias structure for magnetoresistive read heads |
| US7116517B1 (en) | 2002-12-18 | 2006-10-03 | Western Digital (Fremont), Inc. | Stitched pole write element with a T-shaped pole tip portion |
| US7057857B1 (en) | 2002-12-20 | 2006-06-06 | Western Digital (Fremont), Inc. | Dimple pivot post for a rotary co-located microactuator |
| US6888704B1 (en) | 2003-01-22 | 2005-05-03 | Western Digital (Fremont), Inc. | Method and system for providing high sensitivity giant magnetoresistive sensors |
| US6943993B2 (en) | 2003-02-11 | 2005-09-13 | Western Digital (Fremont), Inc. | Magnetic recording head with a side shield structure for controlling side reading of thin film read sensor |
| US20040166368A1 (en) | 2003-02-24 | 2004-08-26 | International Business Machines Corporation | AP-tab spin valve with controlled magnetostriction of the biasing layer |
| US7006327B2 (en) | 2003-02-27 | 2006-02-28 | Western Digital (Fremont), Inc. | Thin film recording head with a buried coil providing a shortened yoke and improved dimension control |
| US7286329B1 (en) | 2003-04-02 | 2007-10-23 | Western Digital (Fremont), Llc | GMR sensor with shallow contiguous junction and bias layers aligned with free sensor layers |
| JP3961496B2 (ja) | 2003-04-18 | 2007-08-22 | アルプス電気株式会社 | Ｃｐｐ型巨大磁気抵抗効果ヘッド |
| JP3974587B2 (ja) | 2003-04-18 | 2007-09-12 | アルプス電気株式会社 | Ｃｐｐ型巨大磁気抵抗効果ヘッド |
| US7265946B2 (en) | 2003-04-30 | 2007-09-04 | Hitachi Global Storage Technologies Netherlands B.V. | Multilayer self-pinned structure for CPP GMR |
| US7916435B1 (en) | 2003-05-02 | 2011-03-29 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic tunnel transistor having a base structure that provides polarization of unpolarized electrons from an emitter based upon a magnetic orientation of a free layer and a self-pinned layer |
| US6867953B2 (en) | 2003-07-02 | 2005-03-15 | Hitachi Global Storage Technologies Netherlands B.V. | Self-pinned in-stack bias structure with improved pinning |
| US7035059B2 (en) | 2003-07-18 | 2006-04-25 | Hitachi Global Storage Technologies, Netherland B.V. | Head with self-pinned structure having pinned layer extending beyond track edges of the free layer |
| US7330339B2 (en) | 2003-07-25 | 2008-02-12 | Hitachi Global Storage Technologies Netherlands B.V. | Structure providing enhanced self-pinning for CPP GMR and tunnel valve heads |
| US7171741B2 (en) | 2003-07-25 | 2007-02-06 | Hitachi Global Storage Technologies Netherlands B.V. | Method for extended self-pinned layer for a current perpendicular to plane head |
| US7245463B2 (en) | 2003-07-25 | 2007-07-17 | Hitachi Global Storage Technologies Netherlands B.V. | Apparatus for extended self-pinned layer for a current perpendicular to plane head |
| US7092220B2 (en) | 2003-07-29 | 2006-08-15 | Hitachi Global Storage Technologies | Apparatus for enhancing thermal stability, improving biasing and reducing damage from electrostatic discharge in self-pinned abutted junction heads having a first self-pinned layer extending under the hard bias layers |
| US7050277B2 (en) | 2003-07-29 | 2006-05-23 | Hitachi Global Storage Technologies Netherlands B.V. | Apparatus having a self-pinned abutted junction magnetic read sensor with hard bias layers formed over ends of a self-pinned layer and extending under a hard bias layer |
| US7099123B2 (en) | 2003-07-29 | 2006-08-29 | Hitachi Global Storage Technologies | Self-pinned abutted junction heads having an arrangement of a second hard bias layer and a free layer for providing a net net longitudinal bias on the free layer |
| US7072154B2 (en) | 2003-07-29 | 2006-07-04 | Hitachi Global Storage Technologies Netherlands B.V. | Method and apparatus for providing a self-pinned bias layer that extends beyond the ends of the free layer |
| US6933042B2 (en) | 2003-07-30 | 2005-08-23 | Hitachi Global Storage Technologies Netherlands B.V. | Ballistic GMR structure using nanoconstruction in self pinned layers |
| US6943997B2 (en) | 2003-09-09 | 2005-09-13 | Hitachi Global Storage Technologies Netherlands B.V. | Sensor with improved stabilization and track definition |
| US6961224B2 (en) | 2003-09-24 | 2005-11-01 | Hitachi Global Storage Technologies Netherlands, B.V. | GMR enhancing seed layer for self pinned spin valves |
| US7298595B2 (en) | 2003-09-26 | 2007-11-20 | Hitachi Global Storage Technologies Netherlands B.V. | Differential GMR sensor with multi-layer bias structure between free layers of first and second self-pinned GMR sensors |
| US7012832B1 (en) | 2003-10-31 | 2006-03-14 | Western Digital (Fremont), Inc. | Magnetic memory cell with plural read transistors |
| US7016168B2 (en) | 2003-11-20 | 2006-03-21 | Headway Technologies, Inc. | Method of increasing CPP GMR in a spin valve structure |
| US7126790B1 (en) | 2003-11-26 | 2006-10-24 | Western Digital (Fremont), Inc. | Magnetic head for perpendicular recording with magnetic loop providing non-perpendicular write field |
| US7126788B1 (en) | 2003-11-26 | 2006-10-24 | Western Digital (Fremont), Inc. | Trailing edge recording magnetic head with reversed double bias coil and deflection pole for perpendicular recording with a non-perpendicular write field |
| US7177120B2 (en) | 2003-12-03 | 2007-02-13 | Hitachi Global Storage Technologies Netherlands B.V. | Self-pinned spin valve sensor with a high coercivity antiparallel (AP) pinned layer |
| US7019949B2 (en) | 2003-12-10 | 2006-03-28 | Hitachi Global Storage Technologies Netherlands B.V. | Self-pinned spin valve sensor having its first AP pinned layer thicker than its second AP pinned layer to reduce the likelihood of amplitude flip |
| US7092221B2 (en) | 2003-12-12 | 2006-08-15 | Hitachi Global Storage Technologies Netherlands, B.V. | Top CPP GMR/TV with back end of stripe pinned by insulating AFM |
| US8104166B1 (en) | 2003-12-19 | 2012-01-31 | Western Digital (Fremont), Llc | Self-aligned method for fabricating a high density GMR read element |
| US7310204B1 (en) | 2003-12-19 | 2007-12-18 | Western Digital (Fremont), Llc | Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layer |
| US7239478B1 (en) | 2004-01-31 | 2007-07-03 | Western Digital (Fremont), Inc. | Write element for perpendicular recording in a data storage system |
| US7342752B1 (en) | 2004-01-31 | 2008-03-11 | Western Digital (Fremont), Llc | Magnetoresistive read head having a bias structure with at least one dusting layer |
| US7199974B1 (en) | 2004-02-02 | 2007-04-03 | Western Digital (Fremont), Inc. | Read/write head with reduced pole tip protrusion |
| US7248433B1 (en) | 2004-02-02 | 2007-07-24 | Western Digital (Fremont), Inc. | Magnetic head with stitched top pole layer and single layer coil or solenoidal coil |
| US7268980B2 (en) | 2004-02-11 | 2007-09-11 | Hitachi Global Storage Technologies Netherlands, B.V. | Magnetic head having self-pinned CPP sensor with multilayer pinned layer |
| US7463459B2 (en) | 2004-02-18 | 2008-12-09 | Hitachi Global Storage Technologies Netherlands B.V. | Self-pinned read sensor design with enhanced lead stabilizing mechanism |
| US7212384B1 (en) | 2004-02-27 | 2007-05-01 | Western Digital (Fremont), Inc. | Magnetic read head with recessed hard bias and current leads |
| US7639457B1 (en) | 2004-02-27 | 2009-12-29 | Western Digital (Fremont), Llc | Magnetic sensor with underlayers promoting high-coercivity, in-plane bias layers |
| US7292409B1 (en) | 2004-02-27 | 2007-11-06 | Western Digital (Fremont), Llc | Magnetic head with thin trailing pedestal layer |
| US7196878B2 (en) | 2004-02-27 | 2007-03-27 | Hitachi Global Storage Technologies Netherlands B.V. | Self-pinned spin valve sensor with stress modification layers for reducing the likelihood of amplitude flip |
| US7248449B1 (en) | 2004-03-31 | 2007-07-24 | Western Digital (Fremont), Inc. | Magnetoresistive read sensor with reduced effective shield-to-shield spacing |
| US7333295B1 (en) | 2004-03-31 | 2008-02-19 | Western Digital (Fremont), Llc | Magnetic recording head with high saturation magnetic flux density CoNiFe thin film composition |
| US6934113B1 (en) | 2004-03-31 | 2005-08-23 | Western Digital (Fremont), Inc. | Method and system for providing dynamic actuation of a write head using a strain element |
| US8670211B1 (en) | 2004-03-31 | 2014-03-11 | Western Digital (Fremont), Llc | Method and system for providing high magnetic flux saturation CoFe films |
| US7110289B1 (en) | 2004-03-31 | 2006-09-19 | Western Digital (Fremont), Inc. | Method and system for controlling MRAM write current to reduce power consumption |
| US7280325B1 (en) | 2004-03-31 | 2007-10-09 | Western Digital (Fremont), Llc | Ferromagnetic structure including a first section separated from a ferromagnetic layer by an electrically conductive nonmagnetic spacer and a second section elongated relative to the first section in at least one dimension |
| US7193815B1 (en) | 2004-04-06 | 2007-03-20 | Western Digital (Fremont), Inc. | Shielded pole magnetic head for perpendicular recording |
| US7672086B1 (en) | 2004-04-28 | 2010-03-02 | Western Digital (Fremont), Llc | Method and system for providing a magnetic element having a current confined layer |
| US7248431B1 (en) | 2004-04-30 | 2007-07-24 | Yinshi Liu | Method of fabricating a perpendicular recording write head having a gap with two portions |
| US7307818B1 (en) | 2004-04-30 | 2007-12-11 | Western Digital (Fremont), Llc | Method and system for providing a stable spin filter |
| US7324310B2 (en) | 2004-04-30 | 2008-01-29 | Hitachi Global Storage Technologies Netherlands B.V. | Self-pinned dual CPP sensor exchange pinned at stripe back-end to avoid amplitude flipping |
| US7660080B1 (en) | 2004-04-30 | 2010-02-09 | Western Digital (Fremont), Llc | Read/write head with dynamic flying height control by magnetostriction |
| US7248447B2 (en) | 2004-05-05 | 2007-07-24 | Hitachi Global Storage Technologies Netherlands B.V. | High Hc pinned self-pinned sensor |
| US7199975B1 (en) | 2004-05-15 | 2007-04-03 | Western Digital (Fremont), Inc. | Magnetic head for perpendicular recording with hard bias structure for write pole tip |
| US7092195B1 (en) | 2004-05-28 | 2006-08-15 | Western Digital (Fremont), Inc. | Method of using a magnetic write head having an internal heater |
| US7037847B2 (en) | 2004-05-28 | 2006-05-02 | Hitachi Global Storage Technologies Netherlands, B.V. | Methods for fabricating read sensor for magnetic heads with reduced read track width |
| JP4002909B2 (ja) | 2004-06-04 | 2007-11-07 | アルプス電気株式会社 | Ｃｐｐ型巨大磁気抵抗効果ヘッド |
| US7469465B2 (en) | 2004-06-30 | 2008-12-30 | Hitachi Global Storage Technologies Netherlands B.V. | Method of providing a low-stress sensor configuration for a lithography-defined read sensor |
| US7345854B2 (en) | 2004-07-13 | 2008-03-18 | Headway Technologies, Inc. | GMR sensor having a reference layer with movable magnetization |
| US7405908B2 (en) | 2004-07-30 | 2008-07-29 | Hitachi Global Storage Technologies Netherlands, B.V. | Magnetic head with improved free magnetic layer biasing for thinner CPP sensor stack |
| US20060025053A1 (en) | 2004-07-30 | 2006-02-02 | Marie-Claire Cyrille | Method for fabricating a magnetic transducer using a slurry with spherical particles for CMP-assisted photoresist lift-off |
| US7522379B1 (en) | 2004-07-30 | 2009-04-21 | Western Digital (Fremont), Llc | Write element with recessed pole and heat sink layer for ultra-high density writing |
| US7238292B1 (en) | 2004-07-30 | 2007-07-03 | Western Digital (Fremont), Inc. | Method of fabricating a write element with a reduced yoke length |
| US7379269B1 (en) | 2004-07-30 | 2008-05-27 | Western Digital (Fremont), Llc | Write element with reduced yoke length for ultra-high density writing |
| US7318947B1 (en) | 2004-08-31 | 2008-01-15 | Western Digital (Fremont), Llc | Method and apparatus for controlling magnetostriction in a spin valve sensor |
| US7170725B1 (en) | 2004-09-01 | 2007-01-30 | Western Digital (Fremont), Inc. | Magnetic sensor having an aluminum-nitride seed layer for an anti-ferromagnetic layer |
| US7595967B1 (en) | 2004-09-07 | 2009-09-29 | Western Digital (Fremont), Llp | Method for fabricating a spacer layer for a magnetoresistive element |
| US7296339B1 (en) | 2004-09-08 | 2007-11-20 | Western Digital (Fremont), Llc | Method for manufacturing a perpendicular magnetic recording head |
| US7124654B1 (en) | 2004-09-30 | 2006-10-24 | Western Digital (Fremont), Inc. | Method for determining a microactuator range of movement |
| US7131346B1 (en) | 2004-10-15 | 2006-11-07 | Western Digital (Fremont), Inc. | Spin stand testing system with fine positioner for head stack assembly |
| US7333304B2 (en) | 2004-11-04 | 2008-02-19 | Hitachi Global Storage Technologies Netherlands B.V. | CPP sensor having hard bias stabilization placed at back edge of the stripe |
| US7041985B1 (en) | 2004-11-12 | 2006-05-09 | Western Digital (Fremont), Inc. | Manipulator for microscopy sample preparation and methods for making and use thereof |
| US7284316B1 (en) | 2004-11-17 | 2007-10-23 | Western Digital (Fremont), Llc | Method for forming a hard bias structure in a magnetoresistive sensor |
| US7382589B2 (en) | 2004-11-18 | 2008-06-03 | Headway Technologies, Inc. | CPP with elongated pinned layer |
| US20060158790A1 (en) | 2005-01-14 | 2006-07-20 | Hitachi Global Storage Technologies | Magnetoresistive sensor having a novel junction structure for improved track width definition and pinned layer stability |
| US7428124B1 (en) | 2005-01-18 | 2008-09-23 | Western Digital (Fremont), Llc | Magnetic recording head with resistive heating element and thermal barrier layer |
| US7372665B1 (en) | 2005-01-18 | 2008-05-13 | Western Digital (Fremont), Llc | Magnetic recording head with resistive heating element located near the write coil |
| US7430098B1 (en) | 2005-01-18 | 2008-09-30 | Western Digital (Fremont), Llc | Perpendicular magnetic recording head with dynamic flying height heating element |
| US7819979B1 (en) | 2005-01-31 | 2010-10-26 | Western Digital (Fremont), Llc | Method and system for cleaning magnetic artifacts using a carbonyl reactive ion etch |
| US7444740B1 (en) | 2005-01-31 | 2008-11-04 | Western Digital (Fremont), Llc | Damascene process for fabricating poles in recording heads |
| US7363697B1 (en) | 2005-02-18 | 2008-04-29 | Western Digital (Fremont), Llc | Method for manufacturing a group of head gimbal assemblies |
| US6969989B1 (en) | 2005-03-11 | 2005-11-29 | Western Digital (Fremont), Inc. | Method for characterizing a perpendicular recording head writing pole |
| US7467459B2 (en) | 2005-04-18 | 2008-12-23 | Hitachi Global Storage Technologies Netherlands B.V. | Method for manufacturing a current in plane magnetoresistive sensor having a contiguous hard bias layer located at back edge of stripe height |
| US7369374B2 (en) | 2005-04-18 | 2008-05-06 | Hitachi Global Storage Technologies Netherlands B.V. | Current in plane magnetoresistive sensor having a contiguous hard bias layer located at back edge of stripe height |
| US7417832B1 (en) | 2005-04-26 | 2008-08-26 | Western Digital (Fremont), Llc | Magnetoresistive structure having a novel specular and filter layer combination |
| US7869160B1 (en) | 2005-04-27 | 2011-01-11 | Western Digital (Fremont), Llc | Perpendicular recording head with shaped pole surfaces for higher linear data densities |
| US7522392B2 (en) | 2005-05-17 | 2009-04-21 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetoresistive sensor based on spin accumulation effect with terminal connection at back end of sensor |
| US7552523B1 (en) | 2005-07-01 | 2009-06-30 | Western Digital (Fremont), Llc | Method for manufacturing a perpendicular magnetic recording transducer |
| US7554767B1 (en) | 2005-07-01 | 2009-06-30 | Western Digital (Fremont), Llc | Electrical lapping guide disposed laterally relative to a shield pedestal |
| US7551406B1 (en) | 2005-07-01 | 2009-06-23 | Western Digital (Fremont), Llc | Dual electrical lapping guides with common bonding pad |
| US8068317B2 (en) | 2005-07-22 | 2011-11-29 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic tunnel transistor with high magnetocurrent |
| US7372674B2 (en) | 2005-07-22 | 2008-05-13 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic tunnel transistor with high magnetocurrent and stronger pinning |
| US8333008B1 (en) | 2005-07-29 | 2012-12-18 | Western Digital (Fremont), Llc | Method for manufacturing a perpendicular magnetic recording transducer |
| US7419610B2 (en) | 2005-08-05 | 2008-09-02 | Hitachi Global Storage Technologies Netherlands B.V. | Method of partial depth material removal for fabrication of CPP read sensor |
| US8424192B1 (en) | 2005-08-08 | 2013-04-23 | Western Digital (Fremont), Llc | Method for manufacturing a pole for a magnetic recording head |
| US7676905B2 (en) | 2005-08-15 | 2010-03-16 | Hitachi Global Storage Technologies Netherlands B.V. | Method of manufacturing a self aligned magnetoresistive sensor |
| US7369371B2 (en) | 2005-08-15 | 2008-05-06 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetoresistive sensor having a shape enhanced pinned layer |
| US7420787B2 (en) | 2005-08-15 | 2008-09-02 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetoresistive sensor having a shape enhanced pinned layer |
| US7522382B1 (en) | 2005-08-22 | 2009-04-21 | Western Digital (Fremont), Llc | Head stack assembly with interleaved flexure tail bond pad rows |
| US7835116B2 (en) * | 2005-09-09 | 2010-11-16 | Seagate Technology Llc | Magnetoresistive stack with enhanced pinned layer |
| US7663846B2 (en) | 2005-12-07 | 2010-02-16 | Hitachi Global Storage Technologies Netherlands B. V. | Magnetoresistive sensor having an enhanced lead overlay design and shape enhanced pinning |
| US7522391B2 (en) | 2005-12-14 | 2009-04-21 | Hitachi Global Storage Technologies Netherlands B.V. | Current perpendicular to plane magnetoresistive sensor having a shape enhanced pinned layer and an in stack bias structure |
| US7652856B2 (en) | 2005-12-27 | 2010-01-26 | Hitachi Global Storage Technologies Netherlands B.V. | Current perpendicular to plane (CPP) magnetoresistive sensor having strong pinning and small gap thickness |
| US7684160B1 (en) | 2006-02-06 | 2010-03-23 | Western Digital (Fremont), Llc | Magnetoresistive structure having a novel specular and barrier layer combination |
| US7419891B1 (en) | 2006-02-13 | 2008-09-02 | Western Digital (Fremont), Llc | Method and system for providing a smaller critical dimension magnetic element utilizing a single layer mask |
| US7493688B1 (en) | 2006-02-13 | 2009-02-24 | Western Digital (Fremont), Llc | Method of manufacturing a magnetic recording transducer |
| US7508627B1 (en) | 2006-03-03 | 2009-03-24 | Western Digital (Fremont), Llc | Method and system for providing perpendicular magnetic recording transducers |
| US7405909B2 (en) | 2006-03-14 | 2008-07-29 | Hitachi Global Storage Technologies Netherlands B.V. | Current perpendicular to plane (CPP) magnetoresistive sensor with free layer biasing by exchange pinning at back edge |
| US7616411B2 (en) | 2006-03-28 | 2009-11-10 | Hitachi Global Storage Technologies Netherlands B.V. | Current perpendicular to plane (CPP) magnetoresistive sensor having a flux guide structure and synthetic free layer |
| US7542246B1 (en) | 2006-04-18 | 2009-06-02 | Western Digital (Fremont), Llc | Transducer with pole tip protrusion compensation layer |
| US7349170B1 (en) | 2006-04-28 | 2008-03-25 | Western Digital (Fremont), Llc | Method of monitoring operation of a disk drive by analyzing the envelope of a read-back signal in the frequency domain |
| US8141235B1 (en) | 2006-06-09 | 2012-03-27 | Western Digital (Fremont), Llc | Method for manufacturing a perpendicular magnetic recording transducers |
| US7602589B2 (en) | 2006-08-30 | 2009-10-13 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetoresistive sensor having shape enhanced pinning and low lead resistance |
| US7672080B1 (en) | 2006-09-15 | 2010-03-02 | Western Digital (Fremont), Llc | Laminated perpendicular writer head including amorphous metal |
| US7580230B2 (en) | 2006-10-24 | 2009-08-25 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetoresistive sensor having shape enhanced pinning, a flux guide structure and damage free virtual edges |
| US7719795B2 (en) | 2006-11-15 | 2010-05-18 | Western Digital (Fremont), Llc | Head having a transducer heater and an air bearing surface with a flow-diversion dam and pressure-relief trough disposed upstream of the transducer |
| US8689430B1 (en) | 2006-11-29 | 2014-04-08 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR)head |
| US7688546B1 (en) | 2006-12-21 | 2010-03-30 | Western Digital (Fremont), Llc | Perpendicular magnetic recording head having nonmagnetic insertion layers |
| US7695761B1 (en) | 2006-12-21 | 2010-04-13 | Western Digital (Fremont), Llc | Method and system for providing a spin tunneling magnetic element having a crystalline barrier layer |
| US8308921B1 (en) | 2006-12-21 | 2012-11-13 | Western Digital (Fremont), Llc | Mask for increased uniformity in ion beam deposition |
| US7371152B1 (en) | 2006-12-22 | 2008-05-13 | Western Digital (Fremont), Llc | Non-uniform subaperture polishing |
| US7911735B1 (en) | 2007-03-09 | 2011-03-22 | Western Digital (Fremont), Llc | Perpendicular magnetic recording head utilizing a nonmagnetic underlayer layer |
| US7911737B1 (en) | 2007-03-23 | 2011-03-22 | Western Digital (Fremont), Llc | Method and system for providing a PMR head having an antiferromagnetically coupled pole |
| US7855854B2 (en) | 2007-04-17 | 2010-12-21 | Western Digital (Fremont), Llc | Head with an air bearing surface having a shallow recessed trailing air flow dam |
| US7872833B2 (en) | 2007-04-17 | 2011-01-18 | Western Digital (Fremont) , LLC | Head with a transducer overcoat having a trailing air flow dam that is shallowly recessed from an air bearing surface |
| US8373945B1 (en) | 2007-04-23 | 2013-02-12 | Western Digital (Fremont), Llc | Magnetic writer having a split yoke |
| US8559141B1 (en) | 2007-05-07 | 2013-10-15 | Western Digital (Fremont), Llc | Spin tunneling magnetic element promoting free layer crystal growth from a barrier layer interface |
| US8072705B1 (en) | 2007-05-11 | 2011-12-06 | Western Digital (Fremont), Llc | Method and system for providing a magnetic writer using a BARC |
| US7736823B1 (en) | 2007-05-11 | 2010-06-15 | Western Digital (Fremont), Llc | Method and system for providing optical proximity correction for structures such as a PMR nose |
| US7436620B1 (en) | 2007-05-29 | 2008-10-14 | Western Digital (Fremont), Llc | Method for selecting an electrical power to be applied to a head-based flying height actuator |
| US7440220B1 (en) | 2007-05-29 | 2008-10-21 | Western Digital (Fremont), Llc | Method for defining a touch-down power for head having a flying height actuator |
| US7872824B1 (en) | 2007-06-11 | 2011-01-18 | Western Digital (Fremont), Llc | Setting an operating bias current for a magnetoresistive head by computing a target operating voltage |
| US7389577B1 (en) | 2007-06-26 | 2008-06-24 | Western Digital (Fremont), Llc | Method to fabricate an ESD resistant tunneling magnetoresistive read transducer |
| US8357244B1 (en) | 2007-06-28 | 2013-01-22 | Western Digital (Fremont), Llc | Method for lifting off photoresist beneath an overlayer |
| US7829264B1 (en) | 2007-08-09 | 2010-11-09 | Western Digital (Fremont), Llc | Method and system for providing a microelectronic device using a plurality of focus distances |
| US7961440B2 (en) | 2007-09-27 | 2011-06-14 | Hitachi Global Storage Technologies Netherlands B.V. | Current perpendicular to plane magnetoresistive sensor with reduced read gap |
| US7846643B1 (en) | 2007-11-02 | 2010-12-07 | Western Digital (Fremont), Llc | Method and system for providing a structure in a microelectronic device using a chromeless alternating phase shift mask |
| US8537494B1 (en) | 2007-11-06 | 2013-09-17 | Western Digital (Fremont), Llc | PMR head with an angled stitch layer |
| US8015692B1 (en) | 2007-11-07 | 2011-09-13 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) head |
| US7583466B2 (en) | 2007-11-15 | 2009-09-01 | Western Digital (Fremont), Llc | Disk drive determining operating fly height by detecting head disk contact from disk rotation time |
| US8077434B1 (en) | 2007-11-19 | 2011-12-13 | Western Digital (Fremont), Llc | Perpendicular magnetic recording head having a recessed magnetic base layer |
| US7916426B2 (en) | 2007-11-30 | 2011-03-29 | Western Digital (Fremont), Llc | Head with an air bearing surface having left and right leading pressurizing steps, each with short and long regions |
| US7785666B1 (en) | 2007-12-12 | 2010-08-31 | Western Digital (Fremont), Llc | Methods for fabricating a magnetic recording device |
| US8079135B1 (en) | 2007-12-13 | 2011-12-20 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) transducer |
| US8793866B1 (en) | 2007-12-19 | 2014-08-05 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording head |
| US8545999B1 (en) | 2008-02-21 | 2013-10-01 | Western Digital (Fremont), Llc | Method and system for providing a magnetoresistive structure |
| US8179636B1 (en) | 2008-03-05 | 2012-05-15 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording writer |
| US8091210B1 (en) | 2008-03-05 | 2012-01-10 | Western Digital (Fremont), Llc | Method for providing a structure in magnetic recording transducer |
| US8169473B1 (en) | 2008-03-27 | 2012-05-01 | Western Digital (Fremont), Llc | Method and system for exposing a photoresist in a magnetic device |
| US8151441B1 (en) | 2008-03-27 | 2012-04-10 | Western Digital (Fremont), Llc | Method for providing and utilizing an electronic lapping guide in a magnetic recording transducer |
| US8166632B1 (en) | 2008-03-28 | 2012-05-01 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) transducer |
| US8146236B1 (en) | 2008-03-28 | 2012-04-03 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) transducer |
| US8163185B1 (en) | 2008-03-31 | 2012-04-24 | Western Digital (Fremont), Llc | Method and apparatus for lifting off photoresist beneath an overlayer |
| US8316527B2 (en) | 2008-04-01 | 2012-11-27 | Western Digital (Fremont), Llc | Method for providing at least one magnetoresistive device |
| JP2009259354A (ja) | 2008-04-18 | 2009-11-05 | Hitachi Global Storage Technologies Netherlands Bv | 磁気ヘッド及びその製造方法 |
| US8136225B1 (en) | 2008-05-15 | 2012-03-20 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording head |
| US8136224B1 (en) | 2008-05-15 | 2012-03-20 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording head utilizing a mask having an undercut line |
| US8136226B2 (en) * | 2008-05-16 | 2012-03-20 | Hitachi Global Storage Technologies Netherlands B.V. | Read sensors and methods of making same with back-edge milling and refilling |
| US8259410B1 (en) | 2008-05-23 | 2012-09-04 | Western Digital (Fremont), Llc | Method and system for providing a magnetic head using a composite magnetic material in the recording transducer |
| US8270126B1 (en) | 2008-06-16 | 2012-09-18 | Western Digital (Fremont), Llc | Method and system for providing an improved hard bias structure |
| US8320076B1 (en) | 2008-06-26 | 2012-11-27 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer including an assist pole having surfaces angled with respect to the ABS |
| US8416540B1 (en) | 2008-06-26 | 2013-04-09 | Western Digital (Fremont), Llc | Method for defining a magnetoresistive junction using multiple mills at a plurality of angles |
| US8349195B1 (en) | 2008-06-27 | 2013-01-08 | Western Digital (Fremont), Llc | Method and system for providing a magnetoresistive structure using undercut free mask |
| US8228633B1 (en) | 2008-08-21 | 2012-07-24 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer having a hybrid moment pole |
| US8276258B1 (en) | 2008-08-26 | 2012-10-02 | Western Digital (Fremont), Llc | Method for fabricating a magnetic recording transducer |
| US8166631B1 (en) | 2008-08-27 | 2012-05-01 | Western Digital (Fremont), Llc | Method for fabricating a magnetic recording transducer having side shields |
| US8343319B1 (en) | 2008-09-25 | 2013-01-01 | Western Digital (Fremont), Llc | Method and system for providing an improved hard bias structure |
| US8720044B1 (en) | 2008-09-26 | 2014-05-13 | Western Digital (Fremont), Llc | Method for manufacturing a magnetic recording transducer having side shields |
| US8334093B2 (en) | 2008-10-31 | 2012-12-18 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording head |
| US8136805B1 (en) | 2008-11-19 | 2012-03-20 | Western Digital (Fremont), Llc | Row bar holder |
| US8077435B1 (en) | 2008-11-20 | 2011-12-13 | Western Digital (Fremont), Llc | Current perpendicular-to-plane read sensor with back shield |
| US8649123B1 (en) | 2008-11-26 | 2014-02-11 | Western Digital (Fremont), Llc | Method to eliminate reactive ion etching (RIE) loading effects for damascene perpendicular magnetic recording (PMR) fabrication |
| US8547667B1 (en) | 2008-11-26 | 2013-10-01 | Western Digital (Fremont), Llc | Method and system for providing a hard bias structure in a magnetic recording transducer |
| US8018678B1 (en) | 2008-11-26 | 2011-09-13 | Western Digital (Fremont), Llc | Method for simultaneous electronic lapping guide (ELG) and perpendicular magnetic recording (PMR) pole formation |
| US8231796B1 (en) | 2008-12-09 | 2012-07-31 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer having side shields |
| US7910267B1 (en) | 2008-12-12 | 2011-03-22 | Western Digital (Fremont), Llc | Method and system for providing optical proximity correction for structures such as a PMR nose |
| US8643980B1 (en) | 2008-12-15 | 2014-02-04 | Western Digital (Fremont), Llc | Micro-actuator enabling single direction motion of a magnetic disk drive head |
| US8320077B1 (en) | 2008-12-15 | 2012-11-27 | Western Digital (Fremont), Llc | Method and system for providing a high moment film |
| US8008912B1 (en) | 2008-12-16 | 2011-08-30 | Western Digital (Fremont), Llc | Method and system for testing P2 stiffness of a magnetoresistance transducer at the wafer level |
| US8259539B1 (en) | 2008-12-17 | 2012-09-04 | Western Digital (Fremont), Llc | Integration of a vertical cavity surface emitting laser (VCSEL) on an energy-assisted magnetic recording (EAMR) head |
| US8196285B1 (en) | 2008-12-17 | 2012-06-12 | Western Digital (Fremont), Llc | Method and system for providing a pole for a perpendicular magnetic recording head using a multi-layer hard mask |
| US8537502B1 (en) | 2009-01-30 | 2013-09-17 | Western Digital (Fremont), Llc | Method and system for providing a magnetic transducer having improved shield-to-shield spacing |
| US8404128B1 (en) | 2009-02-23 | 2013-03-26 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording head |
| US8097846B1 (en) | 2009-02-25 | 2012-01-17 | Western Digital (Fremont), Llc | Metrology and 3D reconstruction of devices in a wafer |
| US8165709B1 (en) | 2009-02-26 | 2012-04-24 | Western Digital (Fremont), Llc | Four pad self-calibrating electronic lapping guide |
| US8203800B2 (en) | 2009-03-05 | 2012-06-19 | Western Digital (Fremont), Llc | Servo design in data storage media |
| US8395867B2 (en) | 2009-03-16 | 2013-03-12 | Dimitar Velikov Dimitrov | Magnetic sensor with a recessed reference layer assembly and a front shield |
| US8262918B1 (en) | 2009-03-25 | 2012-09-11 | Western Digital (Fremont), Llc | Methods of producing damascene main pole for perpendicular magnetic recording head |
| US8077418B1 (en) | 2009-03-31 | 2011-12-13 | Western Digital (Fremont), Llc | Reducing thermal protrusion of a near field transducer in an energy assisted magnetic recording head |
| US8315019B1 (en) | 2009-03-31 | 2012-11-20 | Western Digital (Fremont), Llc | Method and system for providing an improved magnetoresistive structure utilizing an oxidation buffer layer |
| US8222599B1 (en) | 2009-04-15 | 2012-07-17 | Western Digital (Fremont), Llc | Precise metrology with adaptive milling |
| US8254060B1 (en) | 2009-04-17 | 2012-08-28 | Western Digital (Fremont), Llc | Straight top main pole for PMR bevel writer |
| US8400731B1 (en) | 2009-04-19 | 2013-03-19 | Western Digital (Fremont), Llc | Write head with variable side shield gaps |
| US8200054B1 (en) | 2009-04-19 | 2012-06-12 | Western Digital (Fremont), Llc | High efficiency grating coupling for light delivery in EAMR |
| US7796356B1 (en) | 2009-05-04 | 2010-09-14 | Western Digital (Fremont), Llc | Head integrated touchdown sensor for hard disk drives |
| US7800858B1 (en) | 2009-05-04 | 2010-09-21 | Western Digital (Fremont), Llc | Differential head integrated touchdown sensors for hard disk drives |
| US20100290157A1 (en) | 2009-05-14 | 2010-11-18 | Western Digital (Fremont), Llc | Damascene coil processes and structures |
| US8074345B1 (en) | 2009-05-18 | 2011-12-13 | Western Digital (Fremont), Llc | Method of measuring a bevel angle in a write head |
| US8077557B1 (en) | 2009-05-19 | 2011-12-13 | Western Digital (Fremont), Llc | Multiple aperture VCSEL EAMR heads |
| US8191237B1 (en) | 2009-05-21 | 2012-06-05 | Western Digital (Fremont), Llc | Method for providing a structure in a magnetic transducer |
| US8225488B1 (en) | 2009-05-22 | 2012-07-24 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording (PMR) pole |
| US8227023B1 (en) | 2009-05-27 | 2012-07-24 | Western Digital (Fremont), Llc | Method and system for fabricating magnetic transducers with improved pinning |
| US8291743B1 (en) | 2009-05-27 | 2012-10-23 | Western Digital (Fremont), Llc | Method and system for calibrating an electronic lapping guide for a beveled pole in a magnetic recording transducer |
| US8443510B1 (en) | 2009-05-28 | 2013-05-21 | Western Digital (Fremont), Llc | Method for utilizing an electronic lapping guide for a beveled pole in a magnetic recording transducer |
| US8171618B1 (en) | 2009-06-17 | 2012-05-08 | Western Digital (Fremont), Llc | Tunable pole trim processes for fabricating trapezoidal perpendicular magnetic recording (PMR) write poles |
| US8381391B2 (en) | 2009-06-26 | 2013-02-26 | Western Digital (Fremont), Llc | Method for providing a magnetic recording transducer |
| US8318030B2 (en) | 2009-07-13 | 2012-11-27 | Seagate Technology Llc | Magnetic device definition with uniform biasing control |
| US8164864B2 (en) | 2009-07-16 | 2012-04-24 | Western Digital (Fremont), Llc | Method and system for fabricating magnetic transducers with improved pinning |
| US8498084B1 (en) | 2009-07-21 | 2013-07-30 | Western Digital (Fremont), Llc | Magnetoresistive sensors having an improved free layer |
| US8611055B1 (en) | 2009-07-31 | 2013-12-17 | Western Digital (Fremont), Llc | Magnetic etch-stop layer for magnetoresistive read heads |
| US8486285B2 (en) | 2009-08-20 | 2013-07-16 | Western Digital (Fremont), Llc | Damascene write poles produced via full film plating |
| US8194365B1 (en) | 2009-09-03 | 2012-06-05 | Western Digital (Fremont), Llc | Method and system for providing a read sensor having a low magnetostriction free layer |
| US8024748B1 (en) | 2009-09-09 | 2011-09-20 | Western Digital Technologies, Inc. | Method and system for coupling a laser with a slider in an energy assisted magnetic recording disk drive |
| US8449948B2 (en) | 2009-09-10 | 2013-05-28 | Western Digital (Fremont), Llc | Method and system for corrosion protection of layers in a structure of a magnetic recording transducer |
| US8233248B1 (en) | 2009-09-16 | 2012-07-31 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer using a line hard mask |
| US8307539B1 (en) | 2009-09-30 | 2012-11-13 | Western Digital (Fremont), Llc | Method for modeling devices in a wafer |
| US8385157B1 (en) | 2009-09-30 | 2013-02-26 | Western Digital Technologies, Inc. | Method and system for performing EAMR recording at high density using a large thermal spot size |
| US8279719B1 (en) | 2009-10-01 | 2012-10-02 | Western Digital (Fremont), Llc | Method and system for coupling a laser with a slider in an energy assisted magnetic recording disk drive |
| US8385158B1 (en) | 2009-10-06 | 2013-02-26 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer having a planarized near-field transducer and a sloped pole |
| US8194366B1 (en) | 2009-10-14 | 2012-06-05 | Western Digital (Fremont), Llc | TMR read head structures with differential stripe heights |
| US9202480B2 (en) | 2009-10-14 | 2015-12-01 | Western Digital (Fremont), LLC. | Double patterning hard mask for damascene perpendicular magnetic recording (PMR) writer |
| US8336194B2 (en) | 2009-11-03 | 2012-12-25 | Western Digital (Fremont), Llc | Method of fabricating a tunneling magnetoresistive (TMR) reader |
| US8125856B1 (en) | 2009-11-05 | 2012-02-28 | Western Digital (Fremont), Llc | Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive |
| US8394280B1 (en) | 2009-11-06 | 2013-03-12 | Western Digital (Fremont), Llc | Resist pattern protection technique for double patterning application |
| US8164855B1 (en) | 2009-11-06 | 2012-04-24 | Western Digital (Fremont), Llc | Method and system for providing a write pole in an energy assisted magnetic recording disk drive |
| US8322023B1 (en) | 2009-11-10 | 2012-12-04 | Western Digital (Fremont), Llc | Method for providing a wrap-around shield for a magnetic recording transducer |
| US8116171B1 (en) | 2009-11-11 | 2012-02-14 | Western Digital (Fremont), Llc | Method and system for providing energy assisted magnetic recording disk drive using a vertical surface emitting laser |
| US8375564B1 (en) | 2009-12-08 | 2013-02-19 | Western Digital (Fremont), Llc | Method for fabricating a pole of a magnetic transducer |
| US8116043B2 (en) | 2009-12-09 | 2012-02-14 | Western Digital (Fremont), Llc | Method and system for providing a magnetic transducer having an improved read sensor synthetic antiferromagnet |
| US8277669B1 (en) | 2009-12-21 | 2012-10-02 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording pole having a leading edge bevel |
| US8264797B2 (en) | 2009-12-21 | 2012-09-11 | Western Digital (Fremont), Llc | Head gimbal assembly having a radial rotary piezoelectric microactuator between a read head and a flexure tongue |
| US8451556B1 (en) | 2009-12-23 | 2013-05-28 | Western Digital (Fremont), Llc | Method and system for providing a molded capping layer for an energy assisted magnetic recording head |
| US7982989B1 (en) | 2009-12-23 | 2011-07-19 | Western Digital (Fremont), Llc | Method and system for measuring magnetic interference width |
| US8532450B1 (en) | 2009-12-23 | 2013-09-10 | Western Digital (Fremont), Llc | Optical grating and method of manufacture |
| US8012804B1 (en) | 2009-12-23 | 2011-09-06 | Western Digital (Fremont), Llc | Method and system for mounting lasers on energy assisted magnetic recording heads |
| US8134794B1 (en) | 2009-12-23 | 2012-03-13 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording head in a wafer packaging configuration |
| US8257597B1 (en) | 2010-03-03 | 2012-09-04 | Western Digital (Fremont), Llc | Double rie damascene process for nose length control |
| US8164760B2 (en) | 2010-03-11 | 2012-04-24 | Western Digital (Fremont), Llc | Method and system for interrogating the thickness of a carbon layer |
| US8659855B2 (en) | 2010-03-19 | 2014-02-25 | Seagate Technology Llc | Trilayer reader with current constraint at the ABS |
| US8813324B2 (en) | 2010-03-24 | 2014-08-26 | Western Digital (Fremont), Llc | Method for providing a piezoelectric multilayer |
| US8404129B1 (en) | 2010-03-31 | 2013-03-26 | Western Digital (Fremont), Llc | Method and system for providing a curved surface in a magnetic recording head |
| US8607439B1 (en) | 2010-03-31 | 2013-12-17 | Western Digital (Fremont), Llc | Method for providing an energy assisted magnetic recording (EAMR) head |
| US8456963B1 (en) | 2010-04-12 | 2013-06-04 | Western Digital (Fremont), Llc | Method and system for an energy assisted magnetic recording head having a suspension-mounted laser |
| US8341826B1 (en) | 2010-04-12 | 2013-01-01 | Western Digital (Fremont), Llc | Method for fabricating a magnetic recording transducer using a split seed layer |
| US8320722B1 (en) | 2010-04-13 | 2012-11-27 | Western Digital (Fremont), Llc | Non-linear optical grating |
| US8458892B2 (en) | 2010-05-11 | 2013-06-11 | Western Digital (Fremont), Llc | Method for providing a perpendicular magnetic recording transducer using a low energy mill |
| US8409453B1 (en) | 2010-05-12 | 2013-04-02 | Western Digital (Fremont), Llc | Method and system for providing a wrap-around shield using a patterned seed layer |
| US8422841B1 (en) | 2010-05-13 | 2013-04-16 | Western Digital (Fremont), Llc | Double optical grating |
| US8625941B1 (en) | 2010-05-20 | 2014-01-07 | Western Digital (Fremont), Llc | Broadband reflective waveguide metal gratings and their formation |
| US8375565B2 (en) | 2010-05-28 | 2013-02-19 | Western Digital (Fremont), Llc | Method for providing an electronic lapping guide corresponding to a near-field transducer of an energy assisted magnetic recording transducer |
| US8351307B1 (en) | 2010-06-04 | 2013-01-08 | Western Digital (Fremont), Llc | Trailing edge optimized near field transducer having non-rectangular pin cross section |
| US8343364B1 (en) | 2010-06-08 | 2013-01-01 | Western Digital (Fremont), Llc | Double hard-mask mill back method of fabricating a near field transducer for energy assisted magnetic recording |
| US8310901B1 (en) | 2010-06-09 | 2012-11-13 | Western Digital (Fremont), Llc | Method and system for providing separate write and optical modules in an energy assisted magnetic recording disk drive |
| US8320219B1 (en) | 2010-06-15 | 2012-11-27 | Western Digital (Fremont), Llc | Trailing edge optimized near field transducer |
| US8454846B1 (en) | 2010-06-17 | 2013-06-04 | Western Digital (Fremont), Llc | Method and system for providing a full wrap-around shield using a frame configured wet etch in a damascene process |
| US8264798B1 (en) | 2010-06-23 | 2012-09-11 | Western Digital (Fremont), Llc | Systems and methods for providing magnetic recording heads adapted for writing shingled tracks |
| US8248896B1 (en) | 2010-06-24 | 2012-08-21 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording disk drive having improved heat dissipation |
| US8262919B1 (en) | 2010-06-25 | 2012-09-11 | Western Digital (Fremont), Llc | Method and system for providing a perpendicular magnetic recording pole using multiple chemical mechanical planarizations |
| US8422342B1 (en) | 2010-06-25 | 2013-04-16 | Western Digital (Fremont), Llc | Energy assisted magnetic recording disk drive using a distributed feedback laser |
| US8322022B1 (en) | 2010-06-28 | 2012-12-04 | Western Digital (Fremont), Llc | Method for providing an energy assisted magnetic recording head in a wafer packaging configuration |
| US8220140B1 (en) | 2010-09-13 | 2012-07-17 | Western Digital (Fremont), Llc | System for performing bonding a first substrate to a second substrate |
| US8790524B1 (en) | 2010-09-13 | 2014-07-29 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer using a line hard mask and a wet-etchable mask |
| US8444866B1 (en) | 2010-09-21 | 2013-05-21 | Westen Digital (Fremont), LLC | Method and system for providing a perpendicular magnetic recording pole with a multi-layer side gap |
| US9018100B2 (en) | 2010-11-10 | 2015-04-28 | Western Digital (Fremont), Llc | Damascene process using PVD sputter carbon film as CMP stop layer for forming a magnetic recording head |
| US8413317B1 (en) | 2010-11-12 | 2013-04-09 | Western Digital (Fremont), Llc | Method for fabricating a structure for a microelectric device |
| US8518279B1 (en) | 2010-11-15 | 2013-08-27 | Western Digital (Fremont), Llc | Method and system for providing a laser cavity for an energy assisted magnetic recording head |
| US8456964B1 (en) | 2010-11-16 | 2013-06-04 | Western Digital (Fremont), Llc | Energy assisted magnetic recording head having a reflector for improving efficiency of the light beam |
| US8462592B1 (en) | 2010-11-17 | 2013-06-11 | Western Digital (Fremont), Llc | Energy-assisted magnetic recording head having waveguide capable of providing small beam spots |
| US8553369B2 (en) | 2010-11-30 | 2013-10-08 | Seagate Technology Llc | Magnetic element with improved stability and including at least one antiferromagnetic tab |
| US8441756B1 (en) | 2010-12-16 | 2013-05-14 | Western Digital (Fremont), Llc | Method and system for providing an antiferromagnetically coupled writer |
| US8456966B1 (en) | 2010-12-17 | 2013-06-04 | Western Digital (Fremont), Llc | Method and system for enhancing optical efficiency for an EAMR head |
| US8333898B2 (en) | 2010-12-20 | 2012-12-18 | Hitachi Global Storage Technologies Netherlands B.V. | Method for manufacturing a magnetic tape head using a TMR sensor |
| US8670295B1 (en) | 2010-12-20 | 2014-03-11 | Western Digital (Fremont), Llc | Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive |
| US8486286B1 (en) | 2010-12-21 | 2013-07-16 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording writer having an integrated NFT, heat sink, and pole |
| US8289821B1 (en) | 2010-12-21 | 2012-10-16 | Western Digital (Fremont), Llc | Method and system for pulsing EAMR disk drives |
| US8593914B2 (en) | 2010-12-22 | 2013-11-26 | Western Digital (Fremont), Llc | Method and system for optically coupling a laser with a transducer in an energy assisted magnetic recording disk drive |
| US8797686B1 (en) | 2010-12-23 | 2014-08-05 | Western Digital (Fremont), Llc | Magnetic recording transducer with short effective throat height and method of fabrication |
| US8760819B1 (en) | 2010-12-23 | 2014-06-24 | Western Digital (Fremont), Llc | Magnetic recording sensor with sputtered antiferromagnetic coupling trilayer between plated ferromagnetic shields |
| US8588039B1 (en) | 2011-03-02 | 2013-11-19 | Western Digital (Fremont), Llc | Energy-assisted magnetic recording head having multiple cores of different lengths |
| US8491802B1 (en) | 2011-03-08 | 2013-07-23 | Western Digital (Fremont), Llc | Method of forming a dielectric slope for EAMR and magnetic writer |
| US8307540B1 (en) | 2011-03-10 | 2012-11-13 | Western Digital (Fremont), Llc | Method for providing an energy assisted magnetic recording (EAMR) transducer |
| US8721902B1 (en) | 2011-03-11 | 2014-05-13 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording writer having a heat sink and NFT |
| US20120237878A1 (en) | 2011-03-18 | 2012-09-20 | Western Digital (Fremont), Llc | Method and system for providing a side shield for a perpendicular magnetic recording pole |
| US8790527B1 (en) | 2011-03-22 | 2014-07-29 | Western Digital (Fremont), Llc | Method and system for manufacturing tapered waveguide structures in an energy assisted magnetic recording head |
| US8456961B1 (en) | 2011-03-22 | 2013-06-04 | Western Digital (Fremont), Llc | Systems and methods for mounting and aligning a laser in an electrically assisted magnetic recording assembly |
| US8405930B1 (en) | 2011-03-23 | 2013-03-26 | Western Digital (Fremont), Llc | Method and system for providing a transducer having dual, ABS recessed auxiliary poles on opposite sides of a main pole with non-magnetic spacer adjoining back portion of main pole and positioned between auxiliary poles |
| US8597528B1 (en) | 2011-03-30 | 2013-12-03 | Western Digital (Fremont), Llc | Method and system for defining a read sensor using an ion mill planarization |
| US8400738B2 (en) | 2011-04-25 | 2013-03-19 | Seagate Technology Llc | Magnetic element with dual magnetic moments |
| US8582249B2 (en) | 2011-04-26 | 2013-11-12 | Seagate Technology Llc | Magnetic element with reduced shield-to-shield spacing |
| US8547659B1 (en) | 2011-05-09 | 2013-10-01 | Western Digital (Fremont), Llc | System for providing a transducer having a main coil and an additional coil separated from the main pole by a write shield |
| US8871102B2 (en) | 2011-05-25 | 2014-10-28 | Western Digital (Fremont), Llc | Method and system for fabricating a narrow line structure in a magnetic recording head |
| US8578594B2 (en) | 2011-06-06 | 2013-11-12 | Western Digital (Fremont), Llc | Process for fabricating a magnetic pole and shields |
| US8634280B1 (en) | 2011-06-21 | 2014-01-21 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording writer having a ring shaped NFT |
| US8563146B1 (en) | 2011-06-27 | 2013-10-22 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording pole having a dual sidewall angle |
| US8705205B1 (en) | 2011-06-27 | 2014-04-22 | Western Digital (Fremont), Llc | Magnetic recording head having a dual sidewall angle |
| US8518832B1 (en) | 2011-06-27 | 2013-08-27 | Western Digital (Fremont), Llc | Process for masking and removal of residue from complex shapes |
| US8325569B1 (en) | 2011-06-27 | 2012-12-04 | Western Digital (Fremont), Llc | EAMR head having improved optical coupling efficiency |
| US8506828B1 (en) | 2011-06-28 | 2013-08-13 | Western Digital (Fremont), Llc | Method and system for providing a magnetic recording transducer using an ion beam scan polishing planarization |
| US8493695B1 (en) | 2011-06-28 | 2013-07-23 | Western Digital (Fremont), Llc | Method and system for providing a magnetic read transducer having an improved signal to noise ratio |
| US8419953B1 (en) | 2011-06-28 | 2013-04-16 | Western Digital (Fremont), Llc | Method and system for removing an antiferromagnetic seed structure |
| US8480911B1 (en) | 2011-06-30 | 2013-07-09 | Western Digital (Fremont), Llc | Method and system for providing a read sensor in a magnetic recording transducer using focused ion beam scan polishing |
| US8514517B1 (en) | 2011-06-30 | 2013-08-20 | Western Digital (Fremont), Llc | Systems and methods for providing hybrid coils for magnetic write heads |
| US8288204B1 (en) | 2011-08-30 | 2012-10-16 | Western Digital (Fremont), Llc | Methods for fabricating components with precise dimension control |
| US8524068B2 (en) | 2011-08-30 | 2013-09-03 | Western Digital (Fremont), Llc | Low-rate electrochemical etch of thin film metals and alloys |
| US8907666B2 (en) | 2011-09-30 | 2014-12-09 | HGST Netherlands B.V. | Magnetic bias structure for magnetoresistive sensor having a scissor structure |
| US8456967B1 (en) | 2011-10-12 | 2013-06-04 | Western Digital (Fremont), Llc | Systems and methods for providing a pole pedestal for microwave assisted magnetic recording |
| US8320220B1 (en) | 2011-10-13 | 2012-11-27 | Western Digital (Fremont), Llc | Method and system for providing an energy assisted magnetic recording disk drive having a non-conformal heat spreader |
| US8533937B1 (en) | 2011-10-18 | 2013-09-17 | Western Digital (Fremont), Llc | Method of forming a fully wrapped-around shielded PMR writer pole |
| US8617408B2 (en) | 2011-10-18 | 2013-12-31 | HGST Netherlands B.V. | Method for manufacturing a magnetic read sensor with narrow track width using amorphous carbon as a hard mask and localized CMP |
| US8582238B1 (en) | 2011-10-21 | 2013-11-12 | Western Digital (Fremont), Llc | Systems and methods for providing perpendicular magnetic writers having gradient magnetic moment side shields |
| US8419954B1 (en) | 2011-10-31 | 2013-04-16 | Western Digital (Fremont), Llc | Method for providing a side shield for a magnetic recording transducer |
| US8693141B1 (en) | 2011-11-08 | 2014-04-08 | Western Digital (Fremont), Llc | Systems and methods for providing stacked writer leads for magnetic transducers |
| US8491801B1 (en) | 2011-11-08 | 2013-07-23 | Western Digital (Fremont), Llc | Method and system for providing an NFT using a sacrificial NFT structure |
| US8422176B1 (en) | 2011-11-15 | 2013-04-16 | Western Digital (Fremont), Llc | Method and system for providing a magnetic read transducer having a bilayer magnetic seed layer |
| US8630068B1 (en) | 2011-11-15 | 2014-01-14 | Western Digital (Fremont), Llc | Method and system for providing a side shielded read transducer |
| US8675318B1 (en) | 2011-11-22 | 2014-03-18 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having a reduced shield-to-shield spacing |
| US8607438B1 (en) | 2011-12-01 | 2013-12-17 | Western Digital (Fremont), Llc | Method for fabricating a read sensor for a read transducer |
| US8555486B1 (en) | 2011-12-06 | 2013-10-15 | Western Digital (Fremont), Llc | Method for providing a pole in a magnetic recording transducer using a cathodic etch |
| US8749790B1 (en) | 2011-12-08 | 2014-06-10 | Western Digital (Fremont), Llc | Structure and method to measure waveguide power absorption by surface plasmon element |
| US8520336B1 (en) | 2011-12-08 | 2013-08-27 | Western Digital (Fremont), Llc | Magnetic recording head with nano scale pole tip bulge |
| US8749920B1 (en) | 2011-12-16 | 2014-06-10 | Western Digital (Fremont), Llc | Magnetic recording head with dynamic fly height heating and having thermally controlled pole tip protrusion to control and protect reader element |
| US8670214B1 (en) | 2011-12-20 | 2014-03-11 | Western Digital (Fremont), Llc | Method and system for providing enhanced thermal expansion for hard disk drives |
| US8451563B1 (en) | 2011-12-20 | 2013-05-28 | Western Digital (Fremont), Llc | Method for providing a side shield for a magnetic recording transducer using an air bridge |
| US8760823B1 (en) | 2011-12-20 | 2014-06-24 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having soft and hard magnetic bias structures |
| US8599520B1 (en) | 2011-12-20 | 2013-12-03 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having an adaptive read sensor track width |
| US8797684B1 (en) | 2011-12-20 | 2014-08-05 | Western Digital (Fremont), Llc | Magnetic writer configured for high data rate recording |
| US8611035B1 (en) | 2012-02-06 | 2013-12-17 | Western Digital (Fremont), Llc | Capacitance sensor for determining a distance between a head and a magnetic storage medium |
| US8675455B1 (en) | 2012-02-17 | 2014-03-18 | Western Digital (Fremont), Llc | Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers |
| US8670294B1 (en) | 2012-02-17 | 2014-03-11 | Western Digital (Fremont), Llc | Systems and methods for increasing media absorption efficiency using interferometric waveguides |
| US9093639B2 (en) | 2012-02-21 | 2015-07-28 | Western Digital (Fremont), Llc | Methods for manufacturing a magnetoresistive structure utilizing heating and cooling |
| US8670213B1 (en) | 2012-03-16 | 2014-03-11 | Western Digital (Fremont), Llc | Methods for tunable plating seed step coverage |
| US8703397B1 (en) | 2012-03-29 | 2014-04-22 | Western Digital (Fremont), Llc | Method for providing side shields for a magnetic recording transducer |
| US8493693B1 (en) | 2012-03-30 | 2013-07-23 | Western Digital (Fremont), Llc | Perpendicular magnetic recording transducer with AFM insertion layer |
| US8520337B1 (en) | 2012-03-30 | 2013-08-27 | Western Digital (Fremont), Llc | Perpendicular magnetic recording writer pole with leading and trailing bevel side wall angles at air bearing surface |
| US8860407B2 (en) | 2012-03-30 | 2014-10-14 | Western Digital (Fremont), Llc | Method and system for performing on-wafer testing of heads |
| US8611054B1 (en) | 2012-04-11 | 2013-12-17 | Western Digital (Fremont), Llc | Antiferromagnetically-coupled soft bias magnetoresistive read head, and fabrication method therefore |
| US8526275B1 (en) | 2012-04-27 | 2013-09-03 | Westerni Digital (Fremont), LLC | Systems and methods for dissipating heat from a near-field transducer in an energy assisted magnetic recording assembly |
| US8753903B1 (en) | 2012-05-22 | 2014-06-17 | Western Digital (Fremont), Llc | Methods and apparatuses for performing wafer level characterization of a plasmon element |
| US8582241B1 (en) | 2012-05-23 | 2013-11-12 | Western Digital (Fremont), Llc | Method and system for providing a magnetic transducer having a high moment bilayer magnetic seed layer for a trailing shield |
| US8792208B1 (en) | 2012-05-25 | 2014-07-29 | Western Digital (Fremont), Llc | Method for providing side shields having non-conformal regions for a magnetic recording transducer |
| US8582253B1 (en) | 2012-06-04 | 2013-11-12 | Western Digital (Fremont), Llc | Magnetic sensor having a high spin polarization reference layer |
| US8724259B1 (en) | 2012-06-11 | 2014-05-13 | Western Digital (Fremont), Llc | Conformal high moment side shield seed layer for perpendicular magnetic recording writer |
| US8619512B1 (en) | 2012-06-22 | 2013-12-31 | Western Digital (Fremont), Llc | Stress buffer for near-field transducer in energy assisted magnetic recording and methods for fabricating the same |
| US8786983B1 (en) | 2012-06-25 | 2014-07-22 | Western Digital (Fremont), Llc | Magnetic writer having a low aspect ratio two layer coil |
| US8565049B1 (en) | 2012-06-26 | 2013-10-22 | Western Digital (Fremont), Llc | Method and system for reducing thermal protrusion of an NFT |
| US8628672B1 (en) | 2012-06-27 | 2014-01-14 | Western Digital (Fremont), Llc | Process for manufacturing a perpendicular magnetic recording writer pole with nonmagnetic bevel |
| US8711528B1 (en) | 2012-06-29 | 2014-04-29 | Western Digital (Fremont), Llc | Tunnel magnetoresistance read head with narrow shield-to-shield spacing |
| US8797692B1 (en) | 2012-09-07 | 2014-08-05 | Western Digital (Fremont), Llc | Magnetic recording sensor with AFM exchange coupled shield stabilization |
| US8625233B1 (en) | 2012-09-20 | 2014-01-07 | Western Digital (Fremont), Llc | System and method for fabricating a magnetic recording pole |
| US8711518B1 (en) | 2012-09-27 | 2014-04-29 | Western Digital (Fremont), Llc | System and method for deposition in high aspect ratio magnetic writer heads |
| US8760807B1 (en) | 2012-09-28 | 2014-06-24 | Western Digital (Fremont), Llc | Method for providing a wraparound shield for a magnetic recording transducer using a damascene process |
| US8681594B1 (en) | 2012-09-28 | 2014-03-25 | Western Digital (Fremont), Llc | Method and system for improving laser alignment and optical transmission efficiency of an energy assisted magnetic recording head |
| US8760822B1 (en) | 2012-11-28 | 2014-06-24 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having an extended pinned layer and soft magnetic bias structures with improved stability |
| US9053719B2 (en) | 2012-11-30 | 2015-06-09 | Western Digital (Fremont), Llc | Magnetoresistive sensor for a magnetic storage system read head, and fabrication method thereof |
| US8531801B1 (en) | 2012-12-20 | 2013-09-10 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having a composite magnetic shield with smooth interfaces |
| US20140175050A1 (en) | 2012-12-21 | 2014-06-26 | Western Digital (Fremont), Llc | Method for providing a magnetic recording transducer including a wraparound shield and a rectangular pole |
| US8760818B1 (en) | 2013-01-09 | 2014-06-24 | Western Digital (Fremont), Llc | Systems and methods for providing magnetic storage elements with high magneto-resistance using heusler alloys |
| US8780505B1 (en) | 2013-03-12 | 2014-07-15 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having an improved composite magnetic shield |
| US9214172B2 (en) * | 2013-10-23 | 2015-12-15 | Western Digital (Fremont), Llc | Method of manufacturing a magnetic read head |
| US9042059B1 (en) * | 2014-05-15 | 2015-05-26 | HGST Netherlands B.V. | Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor structure with multiple stacked sensors and improved center shield |
| US9401163B2 (en) * | 2014-07-03 | 2016-07-26 | Seagate Technology Llc | Multi-stack reader with split middle shield |
-
2014
- 2014-03-31 US US14/230,962 patent/US9214172B2/en active Active
- 2014-10-22 CN CN201410566845.7A patent/CN104751857B/zh active Active
-
2015
- 2015-11-17 US US14/943,211 patent/US9830936B2/en active Active
- 2015-12-30 HK HK15112812.4A patent/HK1212092A1/zh unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062425A (zh) * | 1990-12-11 | 1992-07-01 | 国际商业机器公司 | 基于自旋阀效应的磁致电阻传感器 |
| WO2000063715A1 (en) * | 1999-04-20 | 2000-10-26 | Seagate Technology Llc | Spin valve sensor with specular electron scattering in free layer |
| CN101958123A (zh) * | 2009-07-13 | 2011-01-26 | 希捷科技有限公司 | 具有垂直各向异性自由层和侧向屏蔽构件的磁传感器 |
| CN102544352A (zh) * | 2010-12-20 | 2012-07-04 | 希捷科技有限公司 | 具有横向钉扎的非易失性存储器单元 |
| CN102810318A (zh) * | 2011-05-06 | 2012-12-05 | 希捷科技有限公司 | 磁阻屏蔽体 |
| CN103310804A (zh) * | 2012-03-14 | 2013-09-18 | 希捷科技有限公司 | 磁传感器制造 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889153A (zh) * | 2020-07-01 | 2022-01-04 | 西部数据技术公司 | 具有后硬偏置且不具有afm层的磁读传感器和相关方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1212092A1 (zh) | 2016-06-03 |
| US9214172B2 (en) | 2015-12-15 |
| US20160180870A1 (en) | 2016-06-23 |
| US9830936B2 (en) | 2017-11-28 |
| CN104751857B (zh) | 2019-02-22 |
| US20150109702A1 (en) | 2015-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104751857A (zh) | 具有反铁磁层的磁性读取磁头 | |
| US8333898B2 (en) | Method for manufacturing a magnetic tape head using a TMR sensor | |
| US7576951B2 (en) | Perpendicular magnetic write head having a magnetic write pole with a concave trailing edge | |
| US7580230B2 (en) | Magnetoresistive sensor having shape enhanced pinning, a flux guide structure and damage free virtual edges | |
| US7630177B2 (en) | Tunnel MR head with closed-edge laminated free layer | |
| US7369374B2 (en) | Current in plane magnetoresistive sensor having a contiguous hard bias layer located at back edge of stripe height | |
| CN101350200B (zh) | 具有电流垂直于平面传感器的磁头 | |
| US11222656B1 (en) | Method to reduce baseline shift for a SOT differential reader | |
| CN104934046B (zh) | 传感器结构及磁读头 | |
| US9437225B2 (en) | Reader designs of shield to shield spacing improvement | |
| US8941954B2 (en) | Magnetic sensor with extended pinned layer and partial wrap around shield | |
| US7405909B2 (en) | Current perpendicular to plane (CPP) magnetoresistive sensor with free layer biasing by exchange pinning at back edge | |
| US20070268625A1 (en) | Method for manufacturing a magnetic write head having a trailing shield with an accurately controlled trailing shield gap thickness | |
| CN105575407A (zh) | 具有与偏置材料分离的侧面屏蔽的剪式读头 | |
| US20050243474A1 (en) | Self-pinned dual CPP sensor exchange pinned at stripe back-end to avoid amplitude flipping | |
| US20140168824A1 (en) | Magnetic sensor having an extended pinned layer and shape enhanced bias structure | |
| CN100373449C (zh) | 具有读写为跨磁道的磁化的数据的磁记录盘驱动器 | |
| JP2013004166A (ja) | ハードバイアスのシード構造を有する磁気センサ | |
| US8139321B2 (en) | Perpendicular magnetic recording write head with improved laminated main pole | |
| US9570100B1 (en) | Two-dimensional magnetic recording device with center shield stabilized by recessed AFM layer | |
| US20070266549A1 (en) | Process for the fabrication of multilayer thin film magnetoresistive sensors | |
| US7773349B2 (en) | Tunnel MR head with long stripe height sensor stabilized through the shield | |
| JP6559965B2 (ja) | トラック幅が狭く且つ読み取りギャップが小さい磁気センサ | |
| US7768749B2 (en) | Tunnel MR head with long stripe height stabilized through side-extended bias layer | |
| JP5980672B2 (ja) | ハードバイアス磁界およびハードバイアスの保磁力の最適化に向けたハードバイアス構造を有する磁気センサ |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1212092 Country of ref document: HK |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200313 Address after: California, USA Patentee after: Western Digital Technologies, Inc. Address before: California, USA Patentee before: Western Digital (Fremont), LLC |
|
| TR01 | Transfer of patent right | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1212092 Country of ref document: HK |