JP4316508B2 - Cpp構造磁気抵抗効果素子およびヘッドスライダ - Google Patents
Cpp構造磁気抵抗効果素子およびヘッドスライダ Download PDFInfo
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- JP4316508B2 JP4316508B2 JP2004570120A JP2004570120A JP4316508B2 JP 4316508 B2 JP4316508 B2 JP 4316508B2 JP 2004570120 A JP2004570120 A JP 2004570120A JP 2004570120 A JP2004570120 A JP 2004570120A JP 4316508 B2 JP4316508 B2 JP 4316508B2
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- film
- magnetic field
- region
- magnetoresistive
- magnetoresistive effect
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/09—Magnetoresistive devices
- G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
-
- 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
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3268—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/10—Magnetoresistive devices
-
- 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
- G11B2005/3996—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 large or giant magnetoresistive effects [GMR], e.g. as generated in spin-valve [SV] devices
-
- 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
- G11B5/3116—Shaping of layers, poles or gaps for improving the form of the electrical signal transduced, e.g. for shielding, contour effect, equalizing, side flux fringing, cross talk reduction between heads or between heads and information tracks
-
- 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
- G11B5/33—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
- G11B5/3929—Disposition of magnetic thin films not used for directly coupling magnetic flux from the track to the MR film or for shielding
- G11B5/3932—Magnetic biasing films
Description
Claims (6)
- 媒体対向面に臨む前端から後方に広がる磁気抵抗効果膜と、媒体対向面に臨む前端から後方に広がりつつ磁気抵抗効果膜を挟み込む磁区制御膜とを備え、磁区制御膜には、磁気抵抗効果膜の前端に沿って磁気抵抗効果膜を横切り、電流磁界と同一の向きに重ね合わせられる第1磁界強度の第1バイアス磁界を確立する第1領域と、磁気抵抗効果膜の後端に沿って磁気抵抗効果膜を横切り、電流磁界と反対向きに重ね合わせられて第1磁界強度よりも大きい第2磁界強度の第2バイアス磁界を確立する第2領域とが形成され、前記第1領域は第1残留磁束密度を有する第1組成材料で構成され、前記第2領域は第1残留磁束密度よりも大きな第2残留磁束密度を有する第2組成材料で構成されることを特徴とするCPP構造磁気抵抗効果素子。
- 媒体対向面に臨む前端から後方に広がる磁気抵抗効果膜と、媒体対向面に臨む前端から後方に広がりつつ磁気抵抗効果膜を挟み込む磁区制御膜とを備え、磁区制御膜には、磁気抵抗効果膜の前端に沿って磁気抵抗効果膜を横切り、電流磁界と同一の向きに重ね合わせられる第1磁界強度の第1バイアス磁界を確立する第1領域と、磁気抵抗効果膜の後端に沿って磁気抵抗効果膜を横切り、電流磁界と反対向きに重ね合わせられて第1磁界強度よりも大きい第2磁界強度の第2バイアス磁界を確立する第2領域とが形成され、前記第1領域の下に形成され前記第1領域で結晶粒の粒径を制御する第1下地層と、前記第2領域の下に形成され前記第2領域で結晶粒の粒径を制御する第2下地層とをさらに備えることを特徴とするCPP構造磁気抵抗効果素子。
- 媒体対向面に臨む前端から後方に広がる磁気抵抗効果膜と、媒体対向面に臨む前端から後方に広がりつつ磁気抵抗効果膜を挟み込む磁区制御膜とを備え、磁区制御膜には、磁気抵抗効果膜の前端に沿って磁気抵抗効果膜を横切り、電流磁界と反対向きに重ね合わせられる第1磁界強度の第1バイアス磁界を確立する第1領域と、磁気抵抗効果膜の後端に沿って磁気抵抗効果膜を横切り、電流磁界と同一の向きに重ね合わせられて第1磁界強度よりも小さい第2磁界強度の第2バイアス磁界を確立する第2領域とが形成され、前記第1領域は第1残留磁束密度を有する第1組成材料で構成され、前記第2領域は第1残留磁束密度よりも小さな第2残留磁束密度を有する第2組成材料で構成されることを特徴とするCPP構造磁気抵抗効果素子。
- 媒体対向面に臨む前端から後方に広がる磁気抵抗効果膜と、媒体対向面に臨む前端から後方に広がりつつ磁気抵抗効果膜を挟み込む磁区制御膜とを備え、磁区制御膜には、磁気抵抗効果膜の前端に沿って磁気抵抗効果膜を横切り、電流磁界と反対向きに重ね合わせられる第1磁界強度の第1バイアス磁界を確立する第1領域と、磁気抵抗効果膜の後端に沿って磁気抵抗効果膜を横切り、電流磁界と同一の向きに重ね合わせられて第1磁界強度よりも小さい第2磁界強度の第2バイアス磁界を確立する第2領域とが形成され、前記第1領域の下に形成され前記第1領域で結晶粒の粒径を制御する第1下地層と、前記第2領域の下に形成され前記第2領域で結晶粒の粒径を制御する第2下地層とをさらに備えることを特徴とするCPP構造磁気抵抗効果素子。
- 媒体対向面で記録媒体に向き合わせられるスライダ本体と、媒体対向面に臨む前端から後方に広がる磁気抵抗効果膜と、媒体対向面に臨む前端から後方に広がりつつ磁気抵抗効果膜を挟み込む磁区制御膜とを備え、磁区制御膜には、磁気抵抗効果膜の前端に沿って磁気抵抗効果膜を横切り、電流磁界と同一の向きに重ね合わせられる第1磁界強度の第1バイアス磁界を確立する第1領域と、磁気抵抗効果膜の後端に沿って磁気抵抗効果膜を横切り、電流磁界と反対向きに重ね合わせられて第1磁界強度よりも大きい第2磁界強度の第2バイアス磁界を確立する第2領域とが形成され、前記第1領域は第1残留磁束密度を有する第1組成材料で構成され、前記第2領域は第1残留磁束密度よりも大きな第2残留磁束密度を有する第2組成材料で構成されることを特徴とするヘッドスライダ。
- 媒体対向面で記録媒体に向き合わせられるスライダ本体と、媒体対向面に臨む前端から後方に広がる磁気抵抗効果膜と、媒体対向面に臨む前端から後方に広がりつつ磁気抵抗効果膜を挟み込む磁区制御膜とを備え、磁区制御膜には、磁気抵抗効果膜の前端に沿って磁気抵抗効果膜を横切り、電流磁界と反対向きに重ね合わせられる第1磁界強度の第1バイアス磁界を確立する第1領域と、磁気抵抗効果膜の後端に沿って磁気抵抗効果膜を横切り、電流磁界と同一の向きに重ね合わせられて第1磁界強度よりも小さい第2磁界強度の第2バイアス磁界を確立する第2領域とが形成され、前記第1領域は第1残留磁束密度を有する第1組成材料で構成され、前記第2領域は第1残留磁束密度よりも小さな第2残留磁束密度を有する第2組成材料で構成されることを特徴とするヘッドスライダ。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/003797 WO2004088763A1 (ja) | 2003-03-27 | 2003-03-27 | Cpp構造磁気抵抗効果素子およびヘッドスライダ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2004088763A1 JPWO2004088763A1 (ja) | 2006-07-06 |
JP4316508B2 true JP4316508B2 (ja) | 2009-08-19 |
Family
ID=33105297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004570120A Expired - Fee Related JP4316508B2 (ja) | 2003-03-27 | 2003-03-27 | Cpp構造磁気抵抗効果素子およびヘッドスライダ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7355825B2 (ja) |
JP (1) | JP4316508B2 (ja) |
CN (1) | CN100456511C (ja) |
AU (1) | AU2003227250A1 (ja) |
WO (1) | WO2004088763A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8208230B2 (en) * | 2008-04-10 | 2012-06-26 | Headway Technologies, Inc. | Binary output reader structure (BORS) with high utilization rate |
JP2010134997A (ja) * | 2008-12-04 | 2010-06-17 | Hitachi Global Storage Technologies Netherlands Bv | Cpp構造の磁気抵抗効果型ヘッド |
JP5570757B2 (ja) * | 2009-05-26 | 2014-08-13 | エイチジーエスティーネザーランドビーブイ | 磁気抵抗効果ヘッド及び磁気記録再生装置 |
US8582250B2 (en) * | 2009-12-04 | 2013-11-12 | Seagate Technology Llc | Double biasing for trilayer MR sensors |
JP5497414B2 (ja) * | 2009-12-07 | 2014-05-21 | エイチジーエスティーネザーランドビーブイ | 磁気ヘッド及びその製造方法 |
US8749924B2 (en) * | 2011-09-13 | 2014-06-10 | Seagate Technology Llc | Tuned shunt ratio for magnetic sensors |
US8902544B2 (en) * | 2012-12-13 | 2014-12-02 | HGST Netherlands B.V. | Spin torque oscillator (STO) reader with soft magnetic side shields |
US9053735B1 (en) | 2014-06-20 | 2015-06-09 | Western Digital (Fremont), Llc | Method for fabricating a magnetic writer using a full-film metal planarization |
US9886974B2 (en) * | 2015-10-30 | 2018-02-06 | Seagate Technology Llc | Read head free layer having front and rear portions biased at different levels |
US10319398B2 (en) * | 2017-08-25 | 2019-06-11 | Headway Technologies, Inc. | Tapered junction shield for self-compensation of asymmetry with increasing aspect ratio for tunneling magneto-resistance (TMR) type read head |
US10614838B2 (en) | 2018-08-23 | 2020-04-07 | Seagate Technology Llc | Reader with side shields decoupled from a top shield |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08147633A (ja) * | 1994-11-18 | 1996-06-07 | Hitachi Ltd | 磁気抵抗効果ヘッド |
US5668688A (en) * | 1996-05-24 | 1997-09-16 | Quantum Peripherals Colorado, Inc. | Current perpendicular-to-the-plane spin valve type magnetoresistive transducer |
JP3249052B2 (ja) * | 1996-09-19 | 2002-01-21 | アルプス電気株式会社 | 磁気抵抗効果素子およびその製造方法とその素子を備えた磁気ヘッド |
JP2002171013A (ja) * | 2000-12-04 | 2002-06-14 | Sony Corp | 磁気抵抗効果素子および磁気抵抗効果型磁気ヘッド |
JP2002329905A (ja) * | 2001-05-02 | 2002-11-15 | Fujitsu Ltd | Cpp構造磁気抵抗効果素子およびその製造方法 |
JP2003006817A (ja) * | 2001-06-22 | 2003-01-10 | Toshiba Corp | 磁気ヘッド及び磁気再生装置 |
JP4564706B2 (ja) * | 2002-09-13 | 2010-10-20 | 株式会社日立グローバルストレージテクノロジーズ | 磁気抵抗効果磁気ヘッド及び磁気記録装置 |
-
2003
- 2003-03-27 WO PCT/JP2003/003797 patent/WO2004088763A1/ja active Application Filing
- 2003-03-27 CN CNB038228807A patent/CN100456511C/zh not_active Expired - Fee Related
- 2003-03-27 JP JP2004570120A patent/JP4316508B2/ja not_active Expired - Fee Related
- 2003-03-27 AU AU2003227250A patent/AU2003227250A1/en not_active Abandoned
-
2005
- 2005-03-04 US US11/072,571 patent/US7355825B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20050146813A1 (en) | 2005-07-07 |
WO2004088763A1 (ja) | 2004-10-14 |
CN1685536A (zh) | 2005-10-19 |
JPWO2004088763A1 (ja) | 2006-07-06 |
AU2003227250A1 (en) | 2004-10-25 |
CN100456511C (zh) | 2009-01-28 |
US7355825B2 (en) | 2008-04-08 |
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