WO1998029868A3 - Laminated plated pole pieces for thin film magnetic transducers - Google Patents

Laminated plated pole pieces for thin film magnetic transducers Download PDF

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Publication number
WO1998029868A3
WO1998029868A3 PCT/US1997/024199 US9724199W WO9829868A3 WO 1998029868 A3 WO1998029868 A3 WO 1998029868A3 US 9724199 W US9724199 W US 9724199W WO 9829868 A3 WO9829868 A3 WO 9829868A3
Authority
WO
WIPO (PCT)
Prior art keywords
nife
layer
thin film
layers
hard
Prior art date
Application number
PCT/US1997/024199
Other languages
French (fr)
Other versions
WO1998029868A2 (en
Inventor
Michael Mallary
Kofi Gyasi
Original Assignee
Mke Quantum Components Colorad
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mke Quantum Components Colorad filed Critical Mke Quantum Components Colorad
Priority to JP10530326A priority Critical patent/JP2000515664A/en
Priority to EP97954654A priority patent/EP0919054A4/en
Priority to AU59052/98A priority patent/AU5905298A/en
Publication of WO1998029868A2 publication Critical patent/WO1998029868A2/en
Publication of WO1998029868A3 publication Critical patent/WO1998029868A3/en

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
    • 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
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure
    • 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
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3133—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure
    • G11B5/314—Disposition of layers including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure where the layers are extra layers normally not provided in the transducing structure, e.g. optical 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
    • G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic 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
    • G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
    • G11B5/3109—Details
    • G11B5/313—Disposition of layers
    • G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
    • G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
    • G11B5/3153—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers including at least one magnetic thin film coupled by interfacing to the basic magnetic thin film structure
    • 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
    • G11B5/3967—Composite structural arrangements of transducers, e.g. inductive write and magnetoresistive read

Abstract

The pole pieces (11, 12) of a thin film head (25, 125) are formed by two thin film layers (14, 16) of the magnetic metal NiFe, each NiFe layer being about 20,000 angstroms thick. These two NiFe layers (14, 16) are separated by an electric insulating layer (15) of alumina (Al2O3), ceramic or NiFe oxide that is about 100 angstroms thick. In one embodiment, a hard-baked photoresist layer (400) is formed only around the edges (40) of the first NiFe layer (14), the electrical insulating layer (15) is deposited over the top surface (411) of the first NiFe layer (14) and over the hard-baked photoresist layer (400), and the second NiFe layer (16) is then deposited, thus providing a three-layer metal/insulator/metal pole piece (14, 15, 16) wherein the hard-baked photoresist blocks edge short circuiting between the two thin film NiFe layers (14, 16). In another embodiment, edge short circuiting is minimized by allowing a small filament of a high electrical resistance plating seed layer of NiFe (581) to extend between the two NiFe thin film layers (14, 16), the high resistance of these long and thin NiFe filaments being much greater than the resistance of the two NiFe thin film layers (14, 16).
PCT/US1997/024199 1996-12-30 1997-12-30 Laminated plated pole pieces for thin film magnetic transducers WO1998029868A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP10530326A JP2000515664A (en) 1996-12-30 1997-12-30 Laminated and plated pole pieces for thin film magnetic transducers
EP97954654A EP0919054A4 (en) 1996-12-30 1997-12-30 Laminated plated pole pieces for thin film magnetic transducers
AU59052/98A AU5905298A (en) 1996-12-30 1997-12-30 Laminated plated pole pieces for thin film magnetic transducers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/777,236 US5805392A (en) 1996-12-30 1996-12-30 Laminated plated pole pieces for thin film magnetic transducers
US08/777,236 1996-12-30

Publications (2)

Publication Number Publication Date
WO1998029868A2 WO1998029868A2 (en) 1998-07-09
WO1998029868A3 true WO1998029868A3 (en) 1998-10-08

Family

ID=25109675

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/024199 WO1998029868A2 (en) 1996-12-30 1997-12-30 Laminated plated pole pieces for thin film magnetic transducers

Country Status (6)

Country Link
US (2) US5805392A (en)
EP (1) EP0919054A4 (en)
JP (1) JP2000515664A (en)
KR (1) KR19990087424A (en)
AU (1) AU5905298A (en)
WO (1) WO1998029868A2 (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6178065B1 (en) * 1997-05-29 2001-01-23 Tdk Corporation Thin film magnetic head and manufacturing method of the head
US6081408A (en) * 1997-12-02 2000-06-27 Masushita-Koto Buki Electronics Industries, Ltd. Magnetoresistive read/write head having reduced write fringing and method for manufacturing same
JP2000048327A (en) * 1998-07-31 2000-02-18 Alps Electric Co Ltd Thin-film magnetic head
US6259583B1 (en) * 1998-09-16 2001-07-10 International Business Machines, Corporation Laminated yoke head with a domain control element
US6375063B1 (en) * 1999-07-16 2002-04-23 Quantum Corporation Multi-step stud design and method for producing closely packed interconnects in magnetic recording heads
US6547975B1 (en) * 1999-10-29 2003-04-15 Unaxis Usa Inc. Magnetic pole fabrication process and device
US6345435B1 (en) 1999-11-22 2002-02-12 Headway Technologies, Inc. Method to make laminated yoke for high data rate giant magneto-resistive head
US6417990B1 (en) 1999-12-06 2002-07-09 Seagate Technology Llc Composite core structure for high efficiency writer
US6473265B1 (en) 1999-12-06 2002-10-29 Seagate Technology Llc High frequency writer with sliced core topology
US6473960B1 (en) * 2000-01-07 2002-11-05 Storage Technology Corporation Method of making nitrided active elements
US6807031B2 (en) 2000-02-08 2004-10-19 Seagate Technology Llc Single domain state laminated thin film structure for use as a magnetic layer of a transducing head
US6437949B1 (en) * 2000-02-08 2002-08-20 Seagate Technology Llc Single domain state laminated thin film structure
US6724569B1 (en) 2000-02-16 2004-04-20 Western Digital (Fremont), Inc. Thin film writer with multiplayer write gap
US6218080B1 (en) 2000-03-06 2001-04-17 Headway Technologies, Inc. Plated flat metal gap for very narrow recording heads
US6456467B1 (en) * 2000-03-31 2002-09-24 Seagate Technology Llc Laminated shields with antiparallel magnetizations
CN1446352A (en) * 2000-08-15 2003-10-01 西加特技术有限责任公司 Magnetic head
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
US6496335B2 (en) * 2000-11-29 2002-12-17 International Business Machines Corporation Magnetic head shield structure having high magnetic stability
US6958885B1 (en) 2000-12-21 2005-10-25 Western Digital (Fremont), Inc. Insulation layer structure for inductive write heads and method of fabrication
US6713195B2 (en) * 2001-01-05 2004-03-30 Nve Corporation Magnetic devices using nanocomposite materials
JP4130868B2 (en) * 2001-03-19 2008-08-06 株式会社日立グローバルストレージテクノロジーズ Magnetic head for perpendicular recording and magnetic disk drive equipped with the same
US6628478B2 (en) * 2001-04-17 2003-09-30 Hitachi Global Storage Technologies Netherlands B.V. Write head with all metallic laminated pole pieces with thickness differential
US6785953B2 (en) 2001-06-18 2004-09-07 International Business Machines Corporation Process of fabricating a write head with protection of a second pole tip thickness
GB0207724D0 (en) 2002-04-03 2002-05-15 Seagate Technology Llc Patent submission-Ruthenium as non-magnetic sedlayer for electrodeposition
US6965494B2 (en) 2002-05-13 2005-11-15 Robert Owen Campbell Magnetic recording head having a first pole for generating an easy axis field and an auxiliary pole for generating a first auxiliary hard axis field that opposes an initial hard axis field
US7280314B2 (en) * 2004-06-30 2007-10-09 Hitachi Global Storage Technologies Netherlands B.V. Lower saturation field structure for perpendicular AFC pole
US20080149490A1 (en) * 2006-12-26 2008-06-26 Bonhote Christian R Electroplating on ultra-thin seed layers
US8021535B2 (en) * 2007-12-26 2011-09-20 Hitachi Global Storage Technologies Netherlands B.V. Methods for plating write pole shield structures with ultra-thin metal gap seed layers
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
US8780499B2 (en) 2012-12-19 2014-07-15 HGST Netherlands B.V. Magnetic write head having a residual shield seed layer for reducing overwriting
US8947827B1 (en) 2013-07-24 2015-02-03 HGST Netherlands B.V. Stitched pole having a tapered tip
US10342142B2 (en) 2017-07-28 2019-07-02 International Business Machines Corporation Implementing customized PCB via creation through use of magnetic pads

Citations (4)

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Publication number Priority date Publication date Assignee Title
US4901179A (en) * 1985-02-15 1990-02-13 Matsushita Electric Industrial Co., Ltd. Magnetic head having a laminated structure
US5313356A (en) * 1990-12-12 1994-05-17 Fuji Electric Co., Ltd. Thin film magnetic head having a magnetic/non-magnetic laminate structure with the non-magnetic material being a metal or an insulating nitride
US5379172A (en) * 1990-09-19 1995-01-03 Seagate Technology, Inc. Laminated leg for thin film magnetic transducer
US5590008A (en) * 1991-04-25 1996-12-31 Hitachi, Ltd. Magnetic disc unit having a plurality of magnetic heads which include multilayer magnetic films

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JPH0722044B2 (en) * 1984-09-12 1995-03-08 ソニー株式会社 High frequency high permeability magnetic material
FR2648942B1 (en) * 1989-06-27 1995-08-11 Thomson Csf SENSOR WITH MAGNETORESISTIVE EFFECT
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JPH0440613A (en) * 1990-06-07 1992-02-12 Mitsubishi Electric Corp Thin film magnetic head element
US5137750A (en) * 1990-11-06 1992-08-11 Seagate Technology, Inc. Method of making a thin film head with contoured pole face edges for undershoot reduction
WO1993011531A1 (en) * 1991-12-02 1993-06-10 Nikko Kyodo Company, Limited Thin film magnetic head
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US5393376A (en) * 1993-12-30 1995-02-28 International Business Machines Corporation Method of making pole tip structure for thin film magnetic heads

Patent Citations (4)

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US4901179A (en) * 1985-02-15 1990-02-13 Matsushita Electric Industrial Co., Ltd. Magnetic head having a laminated structure
US5379172A (en) * 1990-09-19 1995-01-03 Seagate Technology, Inc. Laminated leg for thin film magnetic transducer
US5313356A (en) * 1990-12-12 1994-05-17 Fuji Electric Co., Ltd. Thin film magnetic head having a magnetic/non-magnetic laminate structure with the non-magnetic material being a metal or an insulating nitride
US5590008A (en) * 1991-04-25 1996-12-31 Hitachi, Ltd. Magnetic disc unit having a plurality of magnetic heads which include multilayer magnetic films

Non-Patent Citations (1)

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Title
See also references of EP0919054A4 *

Also Published As

Publication number Publication date
US5805392A (en) 1998-09-08
AU5905298A (en) 1998-07-31
EP0919054A2 (en) 1999-06-02
US5940253A (en) 1999-08-17
EP0919054A4 (en) 2000-04-19
KR19990087424A (en) 1999-12-27
JP2000515664A (en) 2000-11-21
WO1998029868A2 (en) 1998-07-09

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