KR101389487B1 - 복합 자기 실드를 갖는 자기 센서 - Google Patents

복합 자기 실드를 갖는 자기 센서 Download PDF

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Publication number
KR101389487B1
KR101389487B1 KR1020127003433A KR20127003433A KR101389487B1 KR 101389487 B1 KR101389487 B1 KR 101389487B1 KR 1020127003433 A KR1020127003433 A KR 1020127003433A KR 20127003433 A KR20127003433 A KR 20127003433A KR 101389487 B1 KR101389487 B1 KR 101389487B1
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KR
South Korea
Prior art keywords
magnetic
layer
grain growth
magnetoresistive reader
shield element
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Expired - Fee Related
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KR1020127003433A
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English (en)
Korean (ko)
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KR20120045012A (ko
Inventor
블라디슬라브 알렉산드로비치 바스'코
벤카테스와라 라오 인투리
마이클 씨. 카우츠키
치홍 루
마크 티. 키에프
이판 창
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시게이트 테크놀로지 엘엘씨
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Publication of KR20120045012A publication Critical patent/KR20120045012A/ko
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    • 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • 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
    • G11B5/3912—Arrangements in which the active read-out elements are transducing in association with active magnetic shields, e.g. magnetically coupled shields
    • 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Hall/Mr Elements (AREA)
KR1020127003433A 2009-07-08 2010-07-08 복합 자기 실드를 갖는 자기 센서 Expired - Fee Related KR101389487B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/499,157 2009-07-08
US12/499,157 US8437105B2 (en) 2009-07-08 2009-07-08 Magnetic sensor with composite magnetic shield
PCT/US2010/041285 WO2011005914A1 (en) 2009-07-08 2010-07-08 Magnetic sensor with composite magnetic shield

Publications (2)

Publication Number Publication Date
KR20120045012A KR20120045012A (ko) 2012-05-08
KR101389487B1 true KR101389487B1 (ko) 2014-04-28

Family

ID=43064561

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020127003433A Expired - Fee Related KR101389487B1 (ko) 2009-07-08 2010-07-08 복합 자기 실드를 갖는 자기 센서

Country Status (5)

Country Link
US (2) US8437105B2 (enExample)
JP (1) JP6022936B2 (enExample)
KR (1) KR101389487B1 (enExample)
CN (1) CN102483931B (enExample)
WO (1) WO2011005914A1 (enExample)

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US8611055B1 (en) * 2009-07-31 2013-12-17 Western Digital (Fremont), Llc Magnetic etch-stop layer for magnetoresistive read heads
US8771847B2 (en) 2011-10-14 2014-07-08 Seagate Technology Reader stop-layers
EP2833542B1 (en) * 2012-03-30 2019-01-16 National Institute of Advanced Industrial Science and Technology Actuator element using carbon electrode
JP2013254547A (ja) * 2012-06-08 2013-12-19 Hitachi Ltd マイクロ波アシスト記録用磁気ヘッド及び磁気記録再生装置
US9183857B2 (en) * 2012-11-01 2015-11-10 Seagate Technology Llc Magnetic devices having shields including a nickel alloy
US8531801B1 (en) 2012-12-20 2013-09-10 Western Digital (Fremont), Llc Method and system for providing a read transducer having a composite magnetic shield with smooth interfaces
US20140254047A1 (en) * 2013-03-08 2014-09-11 Seagate Technology Llc Reader with decoupled magnetic seed layer
JP6122353B2 (ja) * 2013-06-25 2017-04-26 ルネサスエレクトロニクス株式会社 半導体パッケージ
US9478239B2 (en) * 2013-06-27 2016-10-25 Seagate Technology Llc Reader structure with barrier layer contacting shield
US9691417B1 (en) 2013-06-28 2017-06-27 Seagate Technology Llc Magnetoresistive sensor having a synthetic antiferromagnetic bottom shield
US9251815B2 (en) * 2013-06-28 2016-02-02 Seagate Technology Llc Magnetoresistive sensor with AFM-stabilized bottom shield
US9190082B2 (en) * 2013-08-28 2015-11-17 Seagate Technology, Llc Dual reader structure
KR101476932B1 (ko) * 2013-11-20 2014-12-26 한양대학교 산학협력단 수직 자기 이방성을 갖는 mtj 구조, 이의 제조방법 및 이를 포함하는 자성소자
US9368136B2 (en) * 2014-02-27 2016-06-14 Seagate Technology Llc Magnetoresistive sensor having synthetic antiferromagnetic layer in top and bottom shields
US9412401B2 (en) 2014-05-13 2016-08-09 Seagate Technology Llc Data reader magnetic shield with CoFeNiB material
US9230565B1 (en) 2014-06-24 2016-01-05 Western Digital (Fremont), Llc Magnetic shield for magnetic recording head
US9454979B1 (en) 2014-11-14 2016-09-27 Seagate Technology Llc Sensor structure with multilayer top shield
US10074387B1 (en) 2014-12-21 2018-09-11 Western Digital (Fremont), Llc Method and system for providing a read transducer having symmetric antiferromagnetically coupled shields
US11307055B2 (en) * 2019-09-18 2022-04-19 Analog Devices International Unlimited Company Sensor with magnetic shield
US11754646B2 (en) 2021-03-24 2023-09-12 Analog Devices International Unlimited Company Magnetic sensor system
CN115798522B (zh) * 2021-09-09 2025-10-10 西部数据技术公司 具有稳定上读取器的磁性读取传感器及相关方法

Citations (1)

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US5838521A (en) * 1995-04-17 1998-11-17 Read-Rite Corporation Magnetoresistive transducer having laminated magnetic shields

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JP2731506B2 (ja) 1993-11-22 1998-03-25 富士通株式会社 磁気抵抗効果型磁気ヘッド及びその製造方法
US5515221A (en) 1994-12-30 1996-05-07 International Business Machines Corporation Magnetically stable shields for MR head
JPH09128712A (ja) 1995-10-27 1997-05-16 Victor Co Of Japan Ltd 磁気抵抗効果型ヘッド
US20010029158A1 (en) * 1998-07-30 2001-10-11 Yoshitaka Sasaki Polishing apparatus and polishing method, and method of manufacturing semiconductor device and method of manufacturing thin film magnetic head
JP2000048327A (ja) * 1998-07-31 2000-02-18 Alps Electric Co Ltd 薄膜磁気ヘッド
US6807031B2 (en) * 2000-02-08 2004-10-19 Seagate Technology Llc Single domain state laminated thin film structure for use as a magnetic layer of a transducing head
US6437949B1 (en) 2000-02-08 2002-08-20 Seagate Technology Llc Single domain state laminated thin film structure
US7180712B1 (en) * 2000-02-28 2007-02-20 Headway Technologies, Inc. Shield structure design to improve the stability of an MR head
US6456467B1 (en) * 2000-03-31 2002-09-24 Seagate Technology Llc Laminated shields with antiparallel magnetizations
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JP3659898B2 (ja) * 2000-11-27 2005-06-15 Ｔｄｋ株式会社 薄膜磁気ヘッドおよびその製造方法
US6496335B2 (en) * 2000-11-29 2002-12-17 International Business Machines Corporation Magnetic head shield structure having high magnetic stability
JP3600545B2 (ja) * 2001-04-02 2004-12-15 アルプス電気株式会社 薄膜磁気ヘッド
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US7340824B2 (en) * 2004-06-30 2008-03-11 Hitachi Global Storage Technologies Netherlands B.V. Method for fabricating a magnetic head having an improved magnetic shield
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US5838521A (en) * 1995-04-17 1998-11-17 Read-Rite Corporation Magnetoresistive transducer having laminated magnetic shields

Also Published As

Publication number Publication date
US20130233823A1 (en) 2013-09-12
CN102483931A (zh) 2012-05-30
CN102483931B (zh) 2015-04-01
JP6022936B2 (ja) 2016-11-09
JP2012533141A (ja) 2012-12-20
WO2011005914A1 (en) 2011-01-13
US8945405B2 (en) 2015-02-03
KR20120045012A (ko) 2012-05-08
US8437105B2 (en) 2013-05-07
US20110007425A1 (en) 2011-01-13

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