SG52864A1 - Longitudinally biased magnetoresistive sensor having a concave shaped active region to reduce barhausen noise by achieving a substantially single magnetic domain state - Google Patents

Longitudinally biased magnetoresistive sensor having a concave shaped active region to reduce barhausen noise by achieving a substantially single magnetic domain state

Info

Publication number
SG52864A1
SG52864A1 SG1996011314A SG1996011314A SG52864A1 SG 52864 A1 SG52864 A1 SG 52864A1 SG 1996011314 A SG1996011314 A SG 1996011314A SG 1996011314 A SG1996011314 A SG 1996011314A SG 52864 A1 SG52864 A1 SG 52864A1
Authority
SG
Singapore
Prior art keywords
barhausen
achieving
noise
reduce
active region
Prior art date
Application number
SG1996011314A
Other languages
English (en)
Inventor
Michael L Mallary
Original Assignee
Quantum 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 Quantum Corp filed Critical Quantum Corp
Publication of SG52864A1 publication Critical patent/SG52864A1/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
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • 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
    • G11B5/398—Specially shaped 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Magnetic Heads (AREA)
  • Hall/Mr Elements (AREA)
  • Measuring Magnetic Variables (AREA)
SG1996011314A 1995-11-30 1996-11-16 Longitudinally biased magnetoresistive sensor having a concave shaped active region to reduce barhausen noise by achieving a substantially single magnetic domain state SG52864A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/565,032 US5654854A (en) 1995-11-30 1995-11-30 Longitudinally biased magnetoresistive sensor having a concave shaped active region to reduce Barkhausen noise by achieving a substantially single magnetic domain state

Publications (1)

Publication Number Publication Date
SG52864A1 true SG52864A1 (en) 1998-09-28

Family

ID=24256928

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996011314A SG52864A1 (en) 1995-11-30 1996-11-16 Longitudinally biased magnetoresistive sensor having a concave shaped active region to reduce barhausen noise by achieving a substantially single magnetic domain state

Country Status (9)

Country Link
US (1) US5654854A (ja)
EP (1) EP0777214A3 (ja)
JP (1) JPH09191141A (ja)
KR (1) KR970029361A (ja)
CN (1) CN1165366A (ja)
AU (1) AU7182196A (ja)
CA (1) CA2190913A1 (ja)
DE (1) DE777214T1 (ja)
SG (1) SG52864A1 (ja)

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JPH0983039A (ja) * 1995-09-14 1997-03-28 Nec Corp 磁気抵抗効果素子
US5768067A (en) 1995-09-19 1998-06-16 Alps Electric Co., Ltd. Magnetoresistive head using exchange anisotropic magnetic field with an antiferromagnetic layer
US6166539A (en) * 1996-10-30 2000-12-26 Regents Of The University Of Minnesota Magnetoresistance sensor having minimal hysteresis problems
JP3291208B2 (ja) 1996-10-07 2002-06-10 アルプス電気株式会社 磁気抵抗効果型センサおよびその製造方法とそのセンサを備えた磁気ヘッド
JP2980043B2 (ja) * 1996-12-24 1999-11-22 日本電気株式会社 磁気ヘッド及び磁気記録再生方法
JP3253557B2 (ja) * 1997-05-07 2002-02-04 株式会社東芝 磁気抵抗効果素子とそれを用いた磁気ヘッドおよび磁気記憶装置
JP3253556B2 (ja) * 1997-05-07 2002-02-04 株式会社東芝 磁気抵抗効果素子とそれを用いた磁気ヘッドおよび磁気記憶装置
JP3699802B2 (ja) * 1997-05-07 2005-09-28 株式会社東芝 磁気抵抗効果ヘッド
US6061210A (en) * 1997-09-22 2000-05-09 International Business Machines Corporation Antiparallel pinned spin valve with high magnetic stability
KR100276771B1 (ko) 1998-01-16 2001-01-15 윤종용 하드디스크 드라이브의 자기저항 헤드 장치
US6099699A (en) * 1998-04-22 2000-08-08 Matsushita-Kotobuki Electronics Industries, Ltd. Thin encapsulation process for making thin film read/write heads
CN1146868C (zh) 1998-07-21 2004-04-21 西加特技术有限责任公司 磁头传感器的散热器件及其散热方法
US6156487A (en) * 1998-10-23 2000-12-05 Matsushita-Kotobuki Electronics Industries, Ltd. Top surface imaging technique for top pole tip width control in magnetoresistive read/write head processing
US6592820B1 (en) * 1998-11-05 2003-07-15 Bio-Spectrum Technologies, Inc. System and method for biochemical assay
US6230389B1 (en) 1998-11-19 2001-05-15 Headway Technologies, Inc. Method for fabricating a magnetoresistive (MR) stripe height lapping monitor with improved linearity
JP2003516597A (ja) * 1999-04-14 2003-05-13 シーゲイト テクノロジー エルエルシー 自己整合消磁界平衡要素を使用する高感度スピン弁ヘッド
US6193584B1 (en) 1999-05-27 2001-02-27 Read-Rite Corporation Apparatus and method of device stripe height control
US6571205B1 (en) * 1999-07-07 2003-05-27 Nortel Networks Limited Method and apparatus for transferring information between devices using a tape drive
US6495252B1 (en) 1999-07-22 2002-12-17 Seagate Technology Llc Magnetic recording medium with superparamagnetic underlayer
US6421212B1 (en) 1999-09-21 2002-07-16 Read-Rite Corporation Thin film read head structure with improved bias magnet-to-magnetoresistive element interface and method of fabrication
US6466417B1 (en) 1999-11-02 2002-10-15 International Business Machines Corporation Laminated free layer structure for a spin valve sensor
US6519119B1 (en) * 1999-11-03 2003-02-11 Seagate Technology, Llc Structure for current perrpendicular to plane giant magnetoresistive read heads
EP1345277A4 (en) 2000-12-21 2005-02-16 Fujitsu Ltd MAGNETORESISTIVE COMPONENT, MAGNETIC HEAD AND MAGNET PLATE PLAYER
US6674616B2 (en) 2001-04-09 2004-01-06 Hitachi Global Storage Technologies Netherlands B.V. Spin valve sensor with a biasing layer ecerting a demagnetizing field on a free layer structure
DE10118650A1 (de) * 2001-04-14 2002-10-17 Philips Corp Intellectual Pty Winkelsensor sowie Verfahren zum Erhöhen der Anisotropiefeldstärke einer Sensoreinheit eines Winkelsensors
JP4462790B2 (ja) * 2001-09-04 2010-05-12 ソニー株式会社 磁気メモリ
US7075761B2 (en) * 2002-08-27 2006-07-11 Hitachi Global Storage Technologies Netherlands B.V. Lead-defined and shaped magnetic sensor
JP4016857B2 (ja) * 2002-10-18 2007-12-05 ヤマハ株式会社 磁気センサ及びその製造方法
US7146711B2 (en) * 2002-12-13 2006-12-12 Headway Technologies, Inc. Method to make planarized GMR head for high track density
US6944939B2 (en) 2003-03-21 2005-09-20 Headway Technologies, Inc. Method for forming a GMR sensor having improved longitudinal biasing
US7451641B2 (en) * 2003-10-03 2008-11-18 C.R.F. Società Consortile Per Azioni Magnetic transduction sensor device, manufacturing process and detection process therefrom
US8031442B2 (en) * 2007-08-01 2011-10-04 Hitachi Global Storage Technologies Netherlands B.V. Magnetic head having CPP sensor with improved biasing for free magnetic layer
US9229071B2 (en) * 2011-06-01 2016-01-05 International Business Machines Corporation Identification of molecules based on frequency responses using electromagnetic write-heads and magneto-resistive sensors
US8755154B2 (en) * 2011-09-13 2014-06-17 Seagate Technology Llc Tuned angled uniaxial anisotropy in trilayer magnetic sensors
US8599520B1 (en) * 2011-12-20 2013-12-03 Western Digital (Fremont), Llc Method and system for providing a read transducer having an adaptive read sensor track width
US8947811B1 (en) 2013-03-12 2015-02-03 Western Digital Technologies, Inc. Disk drive using preamble and postamble to adjust asynchronous signal samples of payload
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US9797963B2 (en) * 2014-03-25 2017-10-24 Allegro Microsystems, Llc Systems and methods for a magnetic target with magnetic bias field

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Also Published As

Publication number Publication date
CN1165366A (zh) 1997-11-19
EP0777214A2 (en) 1997-06-04
EP0777214A3 (en) 1998-11-11
US5654854A (en) 1997-08-05
KR970029361A (ko) 1997-06-26
JPH09191141A (ja) 1997-07-22
CA2190913A1 (en) 1997-05-31
DE777214T1 (de) 1997-10-09
AU7182196A (en) 1997-06-05

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