DE69528349D1 - Verbesserter magnetoresistiver Lese-/Schreibkopf (MR) - Google Patents
Verbesserter magnetoresistiver Lese-/Schreibkopf (MR)Info
- Publication number
- DE69528349D1 DE69528349D1 DE69528349T DE69528349T DE69528349D1 DE 69528349 D1 DE69528349 D1 DE 69528349D1 DE 69528349 T DE69528349 T DE 69528349T DE 69528349 T DE69528349 T DE 69528349T DE 69528349 D1 DE69528349 D1 DE 69528349D1
- Authority
- DE
- Germany
- Prior art keywords
- write head
- magnetoresistive read
- improved magnetoresistive
- improved
- read
- 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.)
- Expired - Fee Related
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
-
- 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
-
- 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
- G11B5/3103—Structure or manufacture of integrated heads or heads mechanically assembled and electrically connected to a support or housing
-
- 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
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US36751994A | 1994-12-30 | 1994-12-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69528349D1 true DE69528349D1 (de) | 2002-10-31 |
DE69528349T2 DE69528349T2 (de) | 2003-05-15 |
Family
ID=23447516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69528349T Expired - Fee Related DE69528349T2 (de) | 1994-12-30 | 1995-12-12 | Verbesserter magnetoresistiver Lese-/Schreibkopf (MR) |
Country Status (6)
Country | Link |
---|---|
US (2) | US6025977A (de) |
EP (1) | EP0720153B1 (de) |
JP (1) | JPH08241508A (de) |
KR (1) | KR100237266B1 (de) |
DE (1) | DE69528349T2 (de) |
SG (1) | SG34292A1 (de) |
Families Citing this family (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5694276A (en) * | 1996-07-01 | 1997-12-02 | Read-Rite Corporation | Shielded magnetic head having an inductive coil with low mutual inductance |
US6032353A (en) * | 1997-05-15 | 2000-03-07 | Read-Rite Corporation | Magnetic head with low stack height and self-aligned pole tips |
JPH1186238A (ja) * | 1997-09-10 | 1999-03-30 | Fujitsu Ltd | 磁気ヘッド |
JP3371081B2 (ja) | 1997-12-26 | 2003-01-27 | ティーディーケイ株式会社 | 複合型薄膜磁気ヘッド、複合型薄膜磁気ヘッドの製造方法および製造方法に用いる複合型薄膜磁気ヘッド用共通ユニット |
JP3333816B2 (ja) * | 1998-03-31 | 2002-10-15 | ティーディーケイ株式会社 | 複合型薄膜磁気ヘッドおよびその製造方法 |
US6034848A (en) | 1998-04-22 | 2000-03-07 | International Business Machines Corporation | Low profile multi-layer coil merged thin film magnetic head |
JP3366256B2 (ja) | 1998-07-02 | 2003-01-14 | アルプス電気株式会社 | 薄膜磁気ヘッド及びその製造方法 |
JP2000057531A (ja) * | 1998-08-07 | 2000-02-25 | Fujitsu Ltd | 磁気ヘッド、その製造方法及びディスク装置 |
JP2000182223A (ja) * | 1998-10-08 | 2000-06-30 | Alps Electric Co Ltd | 薄膜磁気ヘッド及びその製造方法 |
US6525902B1 (en) * | 1998-10-13 | 2003-02-25 | Seagate Technology Llc | High areal density thin film magnetic head |
JP3579271B2 (ja) * | 1998-11-19 | 2004-10-20 | Tdk株式会社 | 薄膜磁気ヘッドの製造方法 |
JP3530064B2 (ja) * | 1999-03-29 | 2004-05-24 | Tdk株式会社 | 薄膜磁気ヘッドおよびその製造方法ならびに薄膜磁気ヘッド用素材およびその製造方法 |
US6330128B1 (en) * | 1999-04-26 | 2001-12-11 | International Business Machines Corporation | Magnetic head assembly having open yoke write head with highly defined narrow track width |
JP2000315302A (ja) * | 1999-05-06 | 2000-11-14 | Read Rite Smi Kk | 複合型薄膜磁気ヘッド |
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 |
US7012784B2 (en) * | 1999-07-08 | 2006-03-14 | Tdk Corporation | Thin-film magnetic head and method of manufacturing same |
JP3859398B2 (ja) | 1999-07-08 | 2006-12-20 | Tdk株式会社 | 薄膜磁気ヘッドおよびその製造方法 |
JP2001028107A (ja) * | 1999-07-14 | 2001-01-30 | Tdk Corp | 薄膜磁気ヘッド、磁気ヘッド装置、磁気ディスク装置及び薄膜磁気ヘッドの製造方法 |
US6396660B1 (en) * | 1999-08-23 | 2002-05-28 | Read-Rite Corporation | Magnetic write element having a thermally dissipative structure |
JP3440224B2 (ja) * | 1999-11-29 | 2003-08-25 | Tdk株式会社 | 薄膜磁気ヘッドおよびその製造方法 |
JP2001167408A (ja) | 1999-12-09 | 2001-06-22 | Tdk Corp | 薄膜磁気ヘッドおよびその製造方法 |
JP3854031B2 (ja) * | 2000-03-09 | 2006-12-06 | アルプス電気株式会社 | 薄膜磁気ヘッド及びその製造方法 |
US6433968B1 (en) * | 2000-05-02 | 2002-08-13 | Read-Rite Corporation | Merged read/write head and method of fabricating same |
US6687096B2 (en) * | 2000-06-21 | 2004-02-03 | Tdk Corporation | Thin-film magnetic head and method of manufacturing same |
JP3847068B2 (ja) * | 2000-09-11 | 2006-11-15 | アルプス電気株式会社 | 薄膜磁気ヘッド及びその製造方法 |
JP2002170208A (ja) * | 2000-11-22 | 2002-06-14 | Shinka Jitsugyo Kk | 薄膜磁気ヘッドおよびその製造方法 |
JP2002197617A (ja) * | 2000-12-26 | 2002-07-12 | Shinka Jitsugyo Kk | 薄膜磁気ヘッドおよびその製造方法 |
US6785955B1 (en) * | 2001-01-23 | 2004-09-07 | Western Digital (Fremont), Inc. | Method for providing pedestal-defined zero throat writer |
US6779249B2 (en) * | 2001-03-23 | 2004-08-24 | International Business Machines Corporation | Method and device for determining in-process characteristics of fabricated magnetic heads |
JP2002299729A (ja) * | 2001-03-30 | 2002-10-11 | Fujitsu Ltd | 磁気抵抗効果読み取り素子の製造方法 |
US6628484B2 (en) * | 2001-06-05 | 2003-09-30 | International Business Machines Corporation | Planar gap pre-fill process for read heads |
US7532434B1 (en) | 2001-09-06 | 2009-05-12 | Schreck Erhard T | Recessed write pole for perpendicular recording |
JP3831652B2 (ja) * | 2001-11-07 | 2006-10-11 | アルプス電気株式会社 | 薄膜磁気ヘッド及びその製造方法 |
US7301727B2 (en) * | 2001-12-20 | 2007-11-27 | Seagate Technology Llc | Return pole of a transducer having low thermal induced protrusion |
US6751055B1 (en) * | 2002-01-08 | 2004-06-15 | Western Digital (Fremont), Inc. | Inductive transducer with reduced pole tip protrusion |
US6737281B1 (en) | 2002-01-08 | 2004-05-18 | Western Digital (Fremont), Inc. | Method of making transducer with inorganic nonferromagnetic apex region |
JP2004005775A (ja) * | 2002-05-30 | 2004-01-08 | Hitachi Ltd | 記録再生分離型ヘッド |
US6920021B2 (en) * | 2002-08-26 | 2005-07-19 | Hitachi Global Storage Technologies Netherlands B.V. | Sunken electrical lead defined narrow track width magnetic head |
JP2004295953A (ja) * | 2003-03-26 | 2004-10-21 | Hitachi Ltd | 磁気ヘッド |
US6989964B2 (en) * | 2003-06-16 | 2006-01-24 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic head having a pole piece with a double pedestal structure |
US6985322B2 (en) * | 2003-07-30 | 2006-01-10 | Hitachi Global Storage Technologies Netherlands B.V. | Perpendicular recording and read head assembly with in situ stand alone stabilizer for a magnetic medium underlayer |
US7031121B2 (en) * | 2003-07-30 | 2006-04-18 | Hitachi Global Storage Technologies Netherlands B.V. | Perpendicular recording magnetic head with a write shield magnetically coupled to a first pole piece |
JP4009233B2 (ja) * | 2003-08-21 | 2007-11-14 | アルプス電気株式会社 | 垂直磁気記録ヘッドの製造方法 |
US20060034012A1 (en) * | 2003-08-29 | 2006-02-16 | Lam Terence T | Self-aligned coil process in magnetic recording heads |
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 |
JP4247107B2 (ja) * | 2003-12-24 | 2009-04-02 | ヒタチグローバルストレージテクノロジーズネザーランドビーブイ | 磁気ヘッド及びそれを搭載した磁気記録再生装置 |
US7280313B2 (en) * | 2004-04-30 | 2007-10-09 | Hitachi Global Storage Technologies Netherlands B.V. | High aspect ratio co-planar structure fabrication consisting of different materials |
JP2007141288A (ja) * | 2005-11-15 | 2007-06-07 | Tdk Corp | 薄膜磁気ヘッド、ヘッドジンバルアセンブリ、ヘッドアームアセンブリおよび磁気ディスク装置 |
US7548397B2 (en) * | 2005-11-16 | 2009-06-16 | International Business Machines Corporation | Magnetic reader with piggybacked fence |
US8305715B2 (en) * | 2007-12-27 | 2012-11-06 | HGST Netherlands, B.V. | Magnetoresistance (MR) read elements having an active shield |
US8576514B2 (en) * | 2011-12-16 | 2013-11-05 | Headway Technologies, Inc. | Thin-film magnetic head, method of manufacturing the same, head gimbal assembly, and hard disk drive |
US8861317B1 (en) | 2013-04-02 | 2014-10-14 | Western Digital (Fremont), Llc | Heat assisted magnetic recording transducer having protective pads |
US9343098B1 (en) | 2013-08-23 | 2016-05-17 | Western Digital (Fremont), Llc | Method for providing a heat assisted magnetic recording transducer having protective pads |
KR101942176B1 (ko) | 2017-02-28 | 2019-01-24 | 장인호 | 스팀을 이용한 떡 제조 장치 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3975772A (en) * | 1975-06-02 | 1976-08-17 | International Business Machines Corporation | Double shielded magnetorestive sensing element |
JPS554727A (en) * | 1978-06-22 | 1980-01-14 | Mitsubishi Electric Corp | Magnetoresistance effect type magnetic head |
JPS57208623A (en) * | 1981-06-19 | 1982-12-21 | Hitachi Ltd | Thin film magnetic head for control signal |
US4504880A (en) * | 1982-08-09 | 1985-03-12 | International Business Machines Corporation | Integrated magnetic recording head assembly including an inductive write subassembly and a magnetoresistive read subassembly |
US4555740A (en) * | 1983-04-04 | 1985-11-26 | Hewlett-Packard Company | Thin film transducer head for inductive recording and magnetoresistive reading |
EP0178898A3 (de) * | 1984-10-18 | 1988-03-30 | International Business Machines Corporation | Induktiver Magnetwandler |
JPH0719340B2 (ja) * | 1985-07-23 | 1995-03-06 | ソニー株式会社 | 薄膜磁気ヘツド |
JPH01113910A (ja) * | 1987-10-28 | 1989-05-02 | Hitachi Ltd | 薄膜磁気ヘッド |
US4881143A (en) * | 1988-01-19 | 1989-11-14 | Hewlett-Packard Company | Compensated magneto-resistive read head |
JPH06101097B2 (ja) * | 1988-02-19 | 1994-12-12 | ヤマハ株式会社 | 薄膜磁気ヘッドの製造方法 |
US5075956A (en) * | 1988-03-16 | 1991-12-31 | Digital Equipment Corporation | Method of making recording heads with side shields |
DE68924334T2 (de) * | 1988-12-02 | 1996-05-30 | Hitachi Ltd | Magnetisches Aufzeichnungs- und Abspielgerät sowie magnetoresistiver Kopf zum Einsatz darin. |
NL8902569A (nl) * | 1989-10-17 | 1991-05-16 | Philips Nv | Dunnefilm magneetkop. |
JP2901749B2 (ja) * | 1990-11-19 | 1999-06-07 | 株式会社日立製作所 | 磁気抵抗効果型ヘッド |
JPH04205907A (ja) * | 1990-11-30 | 1992-07-28 | Alps Electric Co Ltd | 薄膜磁気ヘッドおよびその製造方法 |
JPH0536032A (ja) * | 1991-08-01 | 1993-02-12 | Hitachi Ltd | 磁気抵抗効果型ヘツド及びその製造方法 |
JPH0589433A (ja) * | 1991-09-27 | 1993-04-09 | Matsushita Electric Ind Co Ltd | 薄膜磁気ヘツド |
US5311385A (en) * | 1991-12-18 | 1994-05-10 | Minnesota Mining And Manufacturing Company | Magnetoresistive head with integrated bias and magnetic shield layer |
JPH05290325A (ja) * | 1992-04-06 | 1993-11-05 | Matsushita Electric Ind Co Ltd | 薄膜磁気ヘッドの製造方法 |
JP2768372B2 (ja) * | 1992-04-20 | 1998-06-25 | 日本電気株式会社 | 複合型薄膜磁気ヘッド |
US5331493A (en) * | 1992-08-21 | 1994-07-19 | Minnesota Mining And Manufacturing Company | Bidirectional thin-film magnetoresistive tape head assembly |
JP2854513B2 (ja) * | 1993-10-21 | 1999-02-03 | アルプス電気株式会社 | 複合型薄膜磁気ヘッド及びその製造方法 |
US5452164A (en) * | 1994-02-08 | 1995-09-19 | International Business Machines Corporation | Thin film magnetic write head |
US5568335A (en) * | 1994-12-29 | 1996-10-22 | International Business Machines Corporation | Multi-layer gap structure for high resolution magnetoresistive read head |
US5793578A (en) * | 1996-11-15 | 1998-08-11 | International Business Machines Corporation | Thin film induction recording head having an inset first insulation layer that defines zero throat height and pole tip apex angle |
-
1995
- 1995-10-28 SG SG1995001663A patent/SG34292A1/en unknown
- 1995-12-12 EP EP95309055A patent/EP0720153B1/de not_active Expired - Lifetime
- 1995-12-12 DE DE69528349T patent/DE69528349T2/de not_active Expired - Fee Related
- 1995-12-25 JP JP7336940A patent/JPH08241508A/ja active Pending
- 1995-12-29 KR KR1019950065270A patent/KR100237266B1/ko not_active IP Right Cessation
-
1997
- 1997-01-24 US US08/789,167 patent/US6025977A/en not_active Expired - Fee Related
-
1999
- 1999-02-05 US US09/245,232 patent/US6156375A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0720153A3 (de) | 1998-02-25 |
DE69528349T2 (de) | 2003-05-15 |
SG34292A1 (en) | 1996-12-06 |
JPH08241508A (ja) | 1996-09-17 |
KR960025627A (ko) | 1996-07-20 |
US6156375A (en) | 2000-12-05 |
US6025977A (en) | 2000-02-15 |
KR100237266B1 (ko) | 2000-01-15 |
EP0720153A2 (de) | 1996-07-03 |
EP0720153B1 (de) | 2002-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B. Owner name: IBM UNITED KINGDOM LTD., PORTSMOUTH, HAMPSHIRE, GB |
|
8339 | Ceased/non-payment of the annual fee |