WO1998029868A3 - Laminated plated pole pieces for thin film magnetic transducers - Google Patents
Laminated plated pole pieces for thin film magnetic transducers Download PDFInfo
- 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
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
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)
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)
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 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US5032945A (en) * | 1989-11-07 | 1991-07-16 | International Business Machines Corp. | Magnetic thin film structures fabricated with edge closure layers |
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 |
JP2715808B2 (en) * | 1992-06-09 | 1998-02-18 | 株式会社日立製作所 | Method for manufacturing thin-film magnetic head |
US5393376A (en) * | 1993-12-30 | 1995-02-28 | International Business Machines Corporation | Method of making pole tip structure for thin film magnetic heads |
-
1996
- 1996-12-30 US US08/777,236 patent/US5805392A/en not_active Expired - Fee Related
-
1997
- 1997-12-30 WO PCT/US1997/024199 patent/WO1998029868A2/en not_active Application Discontinuation
- 1997-12-30 AU AU59052/98A patent/AU5905298A/en not_active Abandoned
- 1997-12-30 KR KR1019980706844A patent/KR19990087424A/en not_active Application Discontinuation
- 1997-12-30 EP EP97954654A patent/EP0919054A4/en not_active Withdrawn
- 1997-12-30 JP JP10530326A patent/JP2000515664A/en active Pending
-
1998
- 1998-03-26 US US09/048,873 patent/US5940253A/en not_active Expired - Fee Related
Patent Citations (4)
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 |
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)
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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