CA2142377A1 - Dual element magnetoresistive sensor with antiparallel magnetization directions for magnetic state stability - Google Patents

Dual element magnetoresistive sensor with antiparallel magnetization directions for magnetic state stability

Info

Publication number
CA2142377A1
CA2142377A1 CA002142377A CA2142377A CA2142377A1 CA 2142377 A1 CA2142377 A1 CA 2142377A1 CA 002142377 A CA002142377 A CA 002142377A CA 2142377 A CA2142377 A CA 2142377A CA 2142377 A1 CA2142377 A1 CA 2142377A1
Authority
CA
Canada
Prior art keywords
elements
layer
sensor
bias
exchange
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.)
Abandoned
Application number
CA002142377A
Other languages
English (en)
French (fr)
Inventor
Hardayal Singh Gill
Mustafa Pinarbasi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of CA2142377A1 publication Critical patent/CA2142377A1/en
Abandoned legal-status Critical Current

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
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3945—Heads comprising more than one sensitive element
    • G11B5/3948—Heads comprising more than one sensitive element the sensitive elements being active read-out elements
    • G11B5/3951—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes
    • G11B5/3954—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes the active elements transducing on a single track
    • 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
    • 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
    • G11B5/399—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 with intrinsic biasing, e.g. provided by equipotential strips

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Hall/Mr Elements (AREA)
  • Magnetic Heads (AREA)
  • Measuring Magnetic Variables (AREA)
CA002142377A 1994-04-21 1995-02-13 Dual element magnetoresistive sensor with antiparallel magnetization directions for magnetic state stability Abandoned CA2142377A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23067494A 1994-04-21 1994-04-21
US230,674 1994-04-21

Publications (1)

Publication Number Publication Date
CA2142377A1 true CA2142377A1 (en) 1995-10-22

Family

ID=22866142

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002142377A Abandoned CA2142377A1 (en) 1994-04-21 1995-02-13 Dual element magnetoresistive sensor with antiparallel magnetization directions for magnetic state stability

Country Status (8)

Country Link
EP (1) EP0681286A3 (enExample)
JP (1) JPH07296339A (enExample)
KR (1) KR0152965B1 (enExample)
CN (1) CN1064163C (enExample)
BR (1) BR9501495A (enExample)
CA (1) CA2142377A1 (enExample)
MY (1) MY113050A (enExample)
TW (1) TW272283B (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2755199B2 (ja) * 1995-02-27 1998-05-20 日本電気株式会社 永久磁石バイアス型磁気抵抗効果ヘッド
JP2765515B2 (ja) * 1995-05-15 1998-06-18 日本電気株式会社 磁気抵抗効果ヘッド及びその製造方法
JP3575683B2 (ja) * 2000-10-05 2004-10-13 松下電器産業株式会社 多素子型磁気抵抗素子
KR100361977B1 (ko) * 2000-05-13 2002-11-23 (주)바이오세라 무균 무세미와 그 제조방법
JP3729498B2 (ja) * 2003-02-26 2005-12-21 株式会社東芝 磁気抵抗効果ヘッドおよび磁気記録再生装置
CN112305469B (zh) * 2019-07-29 2022-04-29 甘肃省科学院传感技术研究所 具有集成式退火结构的巨磁阻传感器
CN113390956B (zh) * 2021-06-18 2024-02-20 西安建筑科技大学 双磁敏元件探头及基于探头的漏磁检测缺陷定量评价方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103315A (en) * 1977-06-24 1978-07-25 International Business Machines Corporation Antiferromagnetic-ferromagnetic exchange bias films
US4413296A (en) * 1979-07-16 1983-11-01 Eastman Kodak Company Thin film magnetoresistive head
US4903158A (en) * 1988-07-28 1990-02-20 Eastman Kodak Company MR head with complementary easy axis permanent magnet
US5018037A (en) * 1989-10-10 1991-05-21 Krounbi Mohamad T Magnetoresistive read transducer having hard magnetic bias
JPH05250642A (ja) * 1992-01-10 1993-09-28 Toshiba Corp 磁気抵抗効果センサ
US5329413A (en) * 1992-01-10 1994-07-12 Kabushiki Kaisha Toshiba Magnetoresistance sensor magnetically coupled with high-coercive force film at two end regions
US5966272A (en) * 1993-06-21 1999-10-12 Read-Rite Corporation Magnetoresistive read head having an exchange layer
US5406433A (en) * 1993-12-01 1995-04-11 Eastman Kodak Company Dual magnetoresistive head for reproducing very narrow track width short wavelength data
BE1019365A5 (nl) * 2010-06-07 2012-06-05 Ibens Joke Maria Jozef Verpakking.

Also Published As

Publication number Publication date
KR0152965B1 (ko) 1998-10-15
BR9501495A (pt) 1995-11-14
MY113050A (en) 2001-11-30
KR950030054A (ko) 1995-11-24
CN1113587A (zh) 1995-12-20
EP0681286A2 (en) 1995-11-08
CN1064163C (zh) 2001-04-04
EP0681286A3 (en) 1996-03-06
TW272283B (enExample) 1996-03-11
JPH07296339A (ja) 1995-11-10

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Legal Events

Date Code Title Description
FZDE Discontinued