SG99922A1 - Giant magnetoresistive sensor with an ap-coupled low hk free layer - Google Patents

Giant magnetoresistive sensor with an ap-coupled low hk free layer

Info

Publication number
SG99922A1
SG99922A1 SG200104474A SG200104474A SG99922A1 SG 99922 A1 SG99922 A1 SG 99922A1 SG 200104474 A SG200104474 A SG 200104474A SG 200104474 A SG200104474 A SG 200104474A SG 99922 A1 SG99922 A1 SG 99922A1
Authority
SG
Singapore
Prior art keywords
free layer
magnetoresistive sensor
giant magnetoresistive
coupled low
coupled
Prior art date
Application number
SG200104474A
Other languages
English (en)
Inventor
Singh Gill Hardayal
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 SG99922A1 publication Critical patent/SG99922A1/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
    • 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
    • G11B5/33—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
    • 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
    • G11B5/33—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Hall/Mr Elements (AREA)
  • Magnetic Heads (AREA)
  • Thin Magnetic Films (AREA)
SG200104474A 2000-07-31 2001-07-23 Giant magnetoresistive sensor with an ap-coupled low hk free layer SG99922A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/630,329 US6538859B1 (en) 2000-07-31 2000-07-31 Giant magnetoresistive sensor with an AP-coupled low Hk free layer

Publications (1)

Publication Number Publication Date
SG99922A1 true SG99922A1 (en) 2003-11-27

Family

ID=24526738

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200104474A SG99922A1 (en) 2000-07-31 2001-07-23 Giant magnetoresistive sensor with an ap-coupled low hk free layer

Country Status (6)

Country Link
US (1) US6538859B1 (ko)
JP (1) JP3629449B2 (ko)
KR (1) KR100445375B1 (ko)
CN (1) CN1237511C (ko)
SG (1) SG99922A1 (ko)
TW (1) TW544665B (ko)

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US7057865B1 (en) * 2000-08-09 2006-06-06 Seagate Technology Llc High sensitivity tunneling GMR sensors with synthetic antiferromagnet free layer
JP2002092829A (ja) * 2000-09-21 2002-03-29 Fujitsu Ltd 磁気抵抗センサ及び磁気抵抗ヘッド
US6683761B2 (en) * 2000-11-09 2004-01-27 Seagate Technology Llc Magnetoresistive sensor with laminate electrical interconnect
US7292400B2 (en) * 2001-04-23 2007-11-06 Seagate Technology Llc Device for limiting current in a sensor
US6785954B2 (en) * 2002-04-17 2004-09-07 Headway Technologies, Inc. Method for fabricating lead overlay (LOL) on the bottom spin valve GMR read sensor
JP3954615B2 (ja) * 2002-04-24 2007-08-08 松下電器産業株式会社 磁気抵抗素子
US6801415B2 (en) * 2002-08-30 2004-10-05 Freescale Semiconductor, Inc. Nanocrystalline layers for improved MRAM tunnel junctions
US20080043376A1 (en) * 2002-09-13 2008-02-21 Hitachi, Ltd. Magnetic resistive head and magnetic recording apparatus
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
US6838740B2 (en) * 2002-09-27 2005-01-04 Grandis, Inc. Thermally stable magnetic elements utilizing spin transfer and an MRAM device using the magnetic element
US6639830B1 (en) * 2002-10-22 2003-10-28 Btg International Ltd. Magnetic memory device
US7007373B2 (en) * 2002-11-18 2006-03-07 Hitachi Global Storage Technologies Netherlands B.V. Method of manufacturing enhanced spin-valve sensor with engineered overlayer
US6927948B2 (en) * 2003-01-23 2005-08-09 Hitachi Global Storage Technologies Netherlands B.V. Differential CPP GMR sensor with free layers separated by metal gap layer
FR2852399B1 (fr) * 2003-03-14 2005-07-15 Roulements Soc Nouvelle Capteur magnetoriesistif comprenant un element sensible ferromagnetique/antiferromagnetique
US7230802B2 (en) * 2003-11-12 2007-06-12 Hitachi Global Storage Technologies Netherlands B.V. Method and apparatus for providing magnetostriction control in a freelayer of a magnetic memory device
US7019949B2 (en) * 2003-12-10 2006-03-28 Hitachi Global Storage Technologies Netherlands B.V. Self-pinned spin valve sensor having its first AP pinned layer thicker than its second AP pinned layer to reduce the likelihood of amplitude flip
DE602004030160D1 (de) * 2004-02-19 2010-12-30 Mitsubishi Electric Corp Magnetfelddetektor und stromdetektionseinrichtung, positionsdetektionseinrichtung und rotationsdetektionseinrichtung mit dem magnetfelddetektor
US7345854B2 (en) * 2004-07-13 2008-03-18 Headway Technologies, Inc. GMR sensor having a reference layer with movable magnetization
US7576956B2 (en) * 2004-07-26 2009-08-18 Grandis Inc. Magnetic tunnel junction having diffusion stop layer
US7973349B2 (en) * 2005-09-20 2011-07-05 Grandis Inc. Magnetic device having multilayered free ferromagnetic layer
US7859034B2 (en) * 2005-09-20 2010-12-28 Grandis Inc. Magnetic devices having oxide antiferromagnetic layer next to free ferromagnetic layer
US7777261B2 (en) * 2005-09-20 2010-08-17 Grandis Inc. Magnetic device having stabilized free ferromagnetic layer
US7821747B2 (en) * 2006-02-10 2010-10-26 Hitachi Global Storage Technologies Netherlands B.V. Method and apparatus for providing improved pinning structure for tunneling magnetoresistive sensor
US7719801B2 (en) * 2006-04-18 2010-05-18 Hitachi Global Storage Technologies Netherlands, B.V. Magnetoresistive (MR) element having a continuous flux guide defined by the free layer
US7957179B2 (en) * 2007-06-27 2011-06-07 Grandis Inc. Magnetic shielding in magnetic multilayer structures
US20110163400A1 (en) * 2008-03-06 2011-07-07 Fuji Electric Holdings Co., Ltd. Ferromagnetic tunnel junction element and method of driving ferromagnetic tunnel junction element
US7894248B2 (en) * 2008-09-12 2011-02-22 Grandis Inc. Programmable and redundant circuitry based on magnetic tunnel junction (MTJ)
US8063460B2 (en) * 2009-12-18 2011-11-22 Intel Corporation Spin torque magnetic integrated circuits and devices therefor
US8867177B2 (en) * 2010-10-28 2014-10-21 HGST Netherlands B.V. Magnetic sensor having improved resistance to thermal stress induced instability
CN102790170B (zh) * 2011-05-19 2014-11-05 宇能电科技股份有限公司 磁阻感测元件及其形成方法
US8743507B1 (en) * 2013-03-12 2014-06-03 Seagate Technology Llc Seed trilayer for magnetic element
TWI513993B (zh) * 2013-03-26 2015-12-21 Ind Tech Res Inst 三軸磁場感測器、製作磁場感測結構的方法與磁場感測電路
JP6581516B2 (ja) * 2016-01-26 2019-09-25 株式会社東芝 磁気センサおよび磁気センサ装置
US9947347B1 (en) * 2016-12-20 2018-04-17 Western Digital Technologies, Inc. Magnetic sensor using inverse spin hall effect

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US6166539A (en) * 1996-10-30 2000-12-26 Regents Of The University Of Minnesota Magnetoresistance sensor having minimal hysteresis problems
US6306266B1 (en) * 2000-05-17 2001-10-23 International Business Machines Corporation Method of making a top spin valve sensor with an in-situ formed seed layer structure for improving sensor performance

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US5408377A (en) * 1993-10-15 1995-04-18 International Business Machines Corporation Magnetoresistive sensor with improved ferromagnetic sensing layer and magnetic recording system using the sensor
US6166539A (en) * 1996-10-30 2000-12-26 Regents Of The University Of Minnesota Magnetoresistance sensor having minimal hysteresis problems
US6306266B1 (en) * 2000-05-17 2001-10-23 International Business Machines Corporation Method of making a top spin valve sensor with an in-situ formed seed layer structure for improving sensor performance

Also Published As

Publication number Publication date
CN1237511C (zh) 2006-01-18
TW544665B (en) 2003-08-01
KR100445375B1 (ko) 2004-08-25
CN1336636A (zh) 2002-02-20
US6538859B1 (en) 2003-03-25
KR20020011088A (ko) 2002-02-07
JP2002150517A (ja) 2002-05-24
JP3629449B2 (ja) 2005-03-16

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