MY137115A - High coercivity multifilm hard magnetic layer for magnetically stabilizing a spin valve sensor - Google Patents

High coercivity multifilm hard magnetic layer for magnetically stabilizing a spin valve sensor

Info

Publication number
MY137115A
MY137115A MYPI99004203A MYPI9904203A MY137115A MY 137115 A MY137115 A MY 137115A MY PI99004203 A MYPI99004203 A MY PI99004203A MY PI9904203 A MYPI9904203 A MY PI9904203A MY 137115 A MY137115 A MY 137115A
Authority
MY
Malaysia
Prior art keywords
layer
hard magnetic
spin valve
magnetic
valve sensor
Prior art date
Application number
MYPI99004203A
Inventor
Mustafa Pinarbasi
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of MY137115A publication Critical patent/MY137115A/en

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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/733—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the addition of non-magnetic particles
    • 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
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Hall/Mr Elements (AREA)
  • Thin Magnetic Films (AREA)

Abstract

A BILAYER SEEDLAYER IS EMPLOYED BETWEEN A HARD MAGNETIC BIASING LAYER AND A NICKEL OXIDE (NIO) PINNING LAYER OF A BOTTOM SPIN VALVE SENSOR WHEREIN THE BIASING LAYER STABILIZES THE MAGNETIC DOMAINS OF MAGNETIC LAYERS IN THE SPIN VALVE SENSOR. THE BILAYER SEEDLAYER INCLUDES A TANTALUM (TA) LAYER ON THE NICKEL OXIDE (NIO) PINNING LAYER AND A CHROMIUM (CR) LAYER ON THE TANTALUM (TA) LAYER. THE HARD MAGNETIC LAYER IS ON THE CHROMIUM (CR) LAYER. THE HARD MAGNETIC LAYER IS A COBALT (CO) BASED HARD MAGNETIC MATERIAL. IN A PREFERRED EMBODIMENT THE TOTAL THICKNESS OF THE BILAYER SEEDLAYER HAS BEEN REDUCED TO LESS THAN 70 A WITHOUT SACRIFICING THE REQUIRED COERCIVITY OF THE HARD MAGNETIC LAYER FOR WITHSTANDING MAGNETIC INCURSIONS WHICH TEND TO SWITCH THE MAGNETIC SPINS OF THE HARD MAGNETIC LAYER.FIG. 9.
MYPI99004203A 1998-10-21 1999-09-29 High coercivity multifilm hard magnetic layer for magnetically stabilizing a spin valve sensor MY137115A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17639698A 1998-10-21 1998-10-21

Publications (1)

Publication Number Publication Date
MY137115A true MY137115A (en) 2008-12-31

Family

ID=22644189

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI99004203A MY137115A (en) 1998-10-21 1999-09-29 High coercivity multifilm hard magnetic layer for magnetically stabilizing a spin valve sensor

Country Status (5)

Country Link
JP (1) JP3266590B2 (en)
KR (1) KR100338441B1 (en)
CN (1) CN1129892C (en)
MY (1) MY137115A (en)
SG (1) SG81319A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6411476B1 (en) * 1999-10-28 2002-06-25 International Business Machines Corporation Trilayer seed layer structure for spin valve sensor
JP2002319111A (en) * 2001-02-15 2002-10-31 Fujitsu Ltd Magnetic head of magnetoresistance type
US6636400B2 (en) 2001-09-18 2003-10-21 International Business Machines Corporation Magnetoresistive head having improved hard biasing characteristics through the use of a multi-layered seed layer including an oxidized tantalum layer and a chromium layer
JP4146818B2 (en) 2004-04-21 2008-09-10 Ｔｄｋ株式会社 Thin film magnetic head, head gimbal assembly, and hard disk drive
US7428129B2 (en) 2004-06-30 2008-09-23 Hitachi Global Storage Technologies Amsterdam Methods and apparatus for improved hard magnet properties in magnetoresistive read heads using a multi-layered seed layer structure
US7663847B2 (en) * 2005-08-09 2010-02-16 Hitachi Global Storage Technologies Netherlands B.V. Magnetoresistive sensor having an anisotropic hard bias without a buffer layer
CN102074329B (en) * 2009-11-23 2012-04-18 中国科学院物理研究所 Magnetic multilayer film as well as magnetic logic element and magnetic random access memory thereof
CN102760449B (en) * 2011-04-29 2016-06-08 新科实业有限公司 The method of test magnetic head resistance to elevated temperatures and device thereof
US9893119B2 (en) * 2016-03-15 2018-02-13 Texas Instruments Incorporated Integrated circuit with hall effect and anisotropic magnetoresistive (AMR) sensors
CN105911103A (en) * 2016-04-13 2016-08-31 南京工业大学 Pinning spin valve structure, bio-magnetic sensor, and bio-molecular detection method
KR102144089B1 (en) 2019-01-31 2020-08-12 광주과학기술원 Magnetoresistive Sensor and the Manufacturing Method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5739988A (en) * 1996-09-18 1998-04-14 International Business Machines Corporation Spin valve sensor with enhanced magnetoresistance
US5793207A (en) * 1996-10-09 1998-08-11 International Business Machines Corporation Disk drive with a thermal asperity reduction circuitry using a spin valve sensor
US5796561A (en) * 1996-11-27 1998-08-18 International Business Machines Corporation Self-biased spin valve sensor
US5768071A (en) * 1997-06-19 1998-06-16 International Business Machines Corporation Spin valve sensor with improved magnetic stability of the pinned layer

Also Published As

Publication number Publication date
JP2000132817A (en) 2000-05-12
KR100338441B1 (en) 2002-05-27
JP3266590B2 (en) 2002-03-18
CN1129892C (en) 2003-12-03
SG81319A1 (en) 2001-06-19
CN1251933A (en) 2000-05-03
KR20000028687A (en) 2000-05-25

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