JP4000114B2 - Cpp構造磁気抵抗効果素子 - Google Patents
Cpp構造磁気抵抗効果素子 Download PDFInfo
- Publication number
- JP4000114B2 JP4000114B2 JP2003577247A JP2003577247A JP4000114B2 JP 4000114 B2 JP4000114 B2 JP 4000114B2 JP 2003577247 A JP2003577247 A JP 2003577247A JP 2003577247 A JP2003577247 A JP 2003577247A JP 4000114 B2 JP4000114 B2 JP 4000114B2
- Authority
- JP
- Japan
- Prior art keywords
- resistance region
- film
- along
- cpp structure
- head slider
- 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
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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
- 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
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- 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
- G11B5/33—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
- G11B5/33—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
- G11B5/313—Disposition of layers
Description
Claims (7)
- ヘッドスライダの媒体対向面に沿って前端を規定し、該ヘッドスライダの媒体対向面に交差する所定の基準面に沿って後方に広がる磁気抵抗効果膜と、該ヘッドスライダの該媒体対向面に臨む前端から前記磁気抵抗効果膜の境界面に沿って後方に広がる軟磁性の電極層とを備え、前記電極層には、該ヘッドスライダの該媒体対向面に臨む前端から該境界面に沿って後方に広がり、前記磁気抵抗効果膜に接する第1低抵抗領域と、前記第1低抵抗領域の後端から該境界面に沿って後方に広がり、前記第1低抵抗領域よりも高い抵抗率を有する高抵抗領域と、前記第1低抵抗領域に接続されて、前記高抵抗領域の表面に沿って後方に広がり、前記高抵抗領域よりも低い抵抗率を有する第2低抵抗領域とが形成されることを特徴とするCPP構造磁気抵抗効果素子。
- ヘッドスライダの媒体対向面に沿って前端を規定し、該ヘッドスライダの該媒体対向面に交差する所定の基準面に沿って後方に広がる磁気抵抗効果膜と、該ヘッドスライダの該媒体対向面に臨む前端から前記磁気抵抗効果膜の境界面に沿って後方に広がる軟磁性の電極層とを備え、前記電極層には、該ヘッドスライダの該媒体対向面に臨む前端から該境界面に沿って後方に広がり、前記磁気抵抗効果膜に接する第1低抵抗領域と、前記第1低抵抗領域の後端から該境界面に沿って後方に広がり、前記第1低抵抗領域よりも高い抵抗率を有する高抵抗領域と、前記第1低抵抗領域に接続されて、該境界面を含む平面に沿って前記高抵抗領域を迂回しつつ後方に広がり、前記高抵抗領域よりも低い抵抗率を有する第2低抵抗領域とが形成されることを特徴とするCPP構造磁気抵抗効果素子。
- 請求項1または2に記載のCPP構造磁気抵抗効果素子において、前記高抵抗領域は、前記電極層内に取り込まれる酸素原子に基づき形成されることを特徴とするCPP構造磁気抵抗効果素子。
- 請求項1または2に記載のCPP構造磁気抵抗効果素子において、前記高抵抗領域は、前記電極層内に取り込まれるイオン原子に基づき形成されることを特徴とするCPP構造磁気抵抗効果素子。
- 請求項1〜4のいずれかに記載のCPP構造磁気抵抗効果素子において、前記第1および第2低抵抗領域には、前記高抵抗領域の結晶粒に比べて大きな結晶粒が含まれることを特徴とするCPP構造磁気抵抗効果素子。
- 請求項1〜5のいずれかに記載のCPP構造磁気抵抗効果素子において、前記電極層は、前記磁気抵抗効果膜の上側境界面に沿って後方に広がり、少なくとも該ヘッドスライダの該媒体対向面に臨む前端で前記磁気抵抗効果膜の下側境界面に接触する下側電極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。
- 請求項6に記載のCPP構造磁気抵抗効果素子において、前記下側電極は軟磁性であることを特徴とするCPP構造磁気抵抗効果素子。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2002/002684 WO2003079331A1 (fr) | 2002-03-20 | 2002-03-20 | Element magnetoresistif de structure cpp |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2003079331A1 JPWO2003079331A1 (ja) | 2005-07-21 |
JP4000114B2 true JP4000114B2 (ja) | 2007-10-31 |
Family
ID=27854643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003577247A Expired - Fee Related JP4000114B2 (ja) | 2002-03-20 | 2002-03-20 | Cpp構造磁気抵抗効果素子 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7312957B2 (ja) |
EP (1) | EP1486951A4 (ja) |
JP (1) | JP4000114B2 (ja) |
KR (1) | KR100617282B1 (ja) |
CN (1) | CN1299257C (ja) |
WO (1) | WO2003079331A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7961437B2 (en) * | 2007-09-27 | 2011-06-14 | Hitachi Global Storage Technologies Netherlands, B.V. | Magnetic recording head having an extended stripe height and a shortened shield height |
US8659855B2 (en) * | 2010-03-19 | 2014-02-25 | Seagate Technology Llc | Trilayer reader with current constraint at the ABS |
US8390963B2 (en) * | 2011-04-25 | 2013-03-05 | Seagate Technology Llc | Trilayer reader with current constraint at the ABS |
US8749924B2 (en) * | 2011-09-13 | 2014-06-10 | Seagate Technology Llc | Tuned shunt ratio for magnetic sensors |
US8824107B2 (en) * | 2012-10-31 | 2014-09-02 | Seagate Technology Llc | Magnetic element with current constriction feature |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5390061A (en) | 1990-06-08 | 1995-02-14 | Hitachi, Ltd. | Multilayer magnetoresistance effect-type magnetic head |
JPH07296340A (ja) | 1994-04-26 | 1995-11-10 | Sumitomo Metal Ind Ltd | 磁気抵抗効果素子およびその素子を使用した薄膜磁気ヘッド |
JP3635504B2 (ja) * | 1995-08-31 | 2005-04-06 | 富士通株式会社 | 磁気抵抗効果ヘッドとその製造方法及び磁気記録装置 |
EP0801380A3 (en) * | 1996-04-10 | 1998-03-04 | Read-Rite Corporation | Giant magnetoresistive transducer with increased output signal |
JPH1196515A (ja) * | 1997-09-18 | 1999-04-09 | Fujitsu Ltd | Gmr磁気センサ、その製造方法、および磁気ヘッド |
JPH11175920A (ja) * | 1997-12-05 | 1999-07-02 | Nec Corp | 磁気抵抗効果型複合ヘッドおよびその製造方法 |
JPH11316919A (ja) | 1998-04-30 | 1999-11-16 | Hitachi Ltd | スピントンネル磁気抵抗効果型磁気ヘッド |
US6198609B1 (en) * | 1998-11-09 | 2001-03-06 | Read-Rite Corporation | CPP Magnetoresistive device with reduced edge effect and method for making same |
JP2001237469A (ja) | 2000-02-22 | 2001-08-31 | Fujitsu Ltd | 磁気センサ及びその製造方法 |
US6738234B1 (en) | 2000-03-15 | 2004-05-18 | Tdk Corporation | Thin film magnetic head and magnetic transducer |
JP2002025018A (ja) | 2000-07-10 | 2002-01-25 | Tdk Corp | 磁気抵抗効果型薄膜磁気ヘッド及びその製造方法 |
US6654209B2 (en) * | 2001-01-10 | 2003-11-25 | Seagate Technology Llc | Low resistance lead structure for a low resistance magnetic read head |
JP3583079B2 (ja) * | 2001-03-26 | 2004-10-27 | 株式会社東芝 | 磁気抵抗効果素子、磁気ヘッド、磁気再生装置及び磁気記憶装置 |
-
2002
- 2002-03-20 JP JP2003577247A patent/JP4000114B2/ja not_active Expired - Fee Related
- 2002-03-20 KR KR1020047014087A patent/KR100617282B1/ko not_active IP Right Cessation
- 2002-03-20 EP EP02707118A patent/EP1486951A4/en not_active Withdrawn
- 2002-03-20 CN CNB028285921A patent/CN1299257C/zh not_active Expired - Fee Related
- 2002-03-20 WO PCT/JP2002/002684 patent/WO2003079331A1/ja active Application Filing
-
2004
- 2004-09-14 US US10/940,941 patent/US7312957B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPWO2003079331A1 (ja) | 2005-07-21 |
EP1486951A1 (en) | 2004-12-15 |
WO2003079331A1 (fr) | 2003-09-25 |
US20050030673A1 (en) | 2005-02-10 |
CN1639771A (zh) | 2005-07-13 |
KR100617282B1 (ko) | 2006-08-30 |
EP1486951A4 (en) | 2007-05-09 |
US7312957B2 (en) | 2007-12-25 |
KR20040105212A (ko) | 2004-12-14 |
CN1299257C (zh) | 2007-02-07 |
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