JP6121876B2 - 電流集中特性を有する磁気スタック - Google Patents

電流集中特性を有する磁気スタック Download PDF

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Publication number
JP6121876B2
JP6121876B2 JP2013225355A JP2013225355A JP6121876B2 JP 6121876 B2 JP6121876 B2 JP 6121876B2 JP 2013225355 A JP2013225355 A JP 2013225355A JP 2013225355 A JP2013225355 A JP 2013225355A JP 6121876 B2 JP6121876 B2 JP 6121876B2
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JP
Japan
Prior art keywords
magnetic
abs
current
shield
stack
Prior art date
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Active
Application number
JP2013225355A
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English (en)
Japanese (ja)
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JP2014093118A5 (enExample
JP2014093118A (ja
Inventor
マーク・ウィリアム・コビントン
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.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
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Filing date
Publication date
Application filed by Seagate Technology LLC filed Critical Seagate Technology LLC
Publication of JP2014093118A publication Critical patent/JP2014093118A/ja
Publication of JP2014093118A5 publication Critical patent/JP2014093118A5/ja
Application granted granted Critical
Publication of JP6121876B2 publication Critical patent/JP6121876B2/ja
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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N50/00—Galvanomagnetic devices
    • H10N50/10—Magnetoresistive devices
    • 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
    • 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
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G11B5/11—Shielding of head against electric or magnetic fields
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Hall/Mr Elements (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
JP2013225355A 2012-10-31 2013-10-30 電流集中特性を有する磁気スタック Active JP6121876B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/665,505 2012-10-31
US13/665,505 US8824107B2 (en) 2012-10-31 2012-10-31 Magnetic element with current constriction feature

Publications (3)

Publication Number Publication Date
JP2014093118A JP2014093118A (ja) 2014-05-19
JP2014093118A5 JP2014093118A5 (enExample) 2015-04-30
JP6121876B2 true JP6121876B2 (ja) 2017-04-26

Family

ID=49517327

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013225355A Active JP6121876B2 (ja) 2012-10-31 2013-10-30 電流集中特性を有する磁気スタック

Country Status (5)

Country Link
US (1) US8824107B2 (enExample)
EP (1) EP2728579B1 (enExample)
JP (1) JP6121876B2 (enExample)
KR (1) KR101536634B1 (enExample)
CN (1) CN103794223B (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140268417A1 (en) * 2013-03-16 2014-09-18 Seagate Technology Llc Bottom shield stabilized magnetic seed layer
US9406320B2 (en) * 2014-08-20 2016-08-02 HGST Netherlands B.V. Scissor unidirectional biasing with hard bias stabilized soft bias
US9378761B1 (en) 2015-04-22 2016-06-28 HGST Netherlands B.V. System for adjusting bias of relative magnetizations of ferromagnetic layers in a magnetoresistive sensor
US9472216B1 (en) * 2015-09-23 2016-10-18 Western Digital (Fremont), Llc Differential dual free layer magnetic reader
US11514933B1 (en) * 2021-08-10 2022-11-29 Western Digital Technologies, Inc. Method to enhance magnetic strength and robustness of rear hard bias for dual free layer read

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5515221A (en) 1994-12-30 1996-05-07 International Business Machines Corporation Magnetically stable shields for MR head
JP2001006130A (ja) 1999-06-24 2001-01-12 Tdk Corp トンネル磁気抵抗効果型ヘッド
US6456467B1 (en) 2000-03-31 2002-09-24 Seagate Technology Llc Laminated shields with antiparallel magnetizations
JP2003069109A (ja) * 2001-08-30 2003-03-07 Sony Corp 磁気抵抗効果型磁気センサ、磁気抵抗効果型磁気ヘッド、磁気再生装置と、磁気抵抗効果型磁気センサおよび磁気抵抗効果型磁気ヘッドの製造方法
CN1299257C (zh) * 2002-03-20 2007-02-07 富士通株式会社 电流垂直于平面结构的磁电阻元件
JP4065787B2 (ja) * 2002-08-30 2008-03-26 株式会社日立グローバルストレージテクノロジーズ 磁気ヘッドおよび磁気記録再生装置
US7869165B2 (en) * 2007-07-30 2011-01-11 Tdk Corporation Magnetic field detecting element having stack with a plurality of free layers and side shield layers
US8149546B2 (en) 2007-10-26 2012-04-03 Tdk Corporation Magnetic field detecting element including tri-layer stack with stepped portion
US8098463B2 (en) * 2008-07-30 2012-01-17 Hitachi Global Storage Technologies Netherlands, B.V. Current perpendicular to plane magnetoresistance read head design using a current confinement structure proximal to an air bearing surface
US7974047B2 (en) * 2008-09-02 2011-07-05 Hitachi Global Storage Technologies Netherlands, B.V. Current perpendicular to plane differential magnetoresistance read head design using a current confinement structure proximal to an air bearing surface
US8659855B2 (en) * 2010-03-19 2014-02-25 Seagate Technology Llc Trilayer reader with current constraint at the ABS
US8089734B2 (en) * 2010-05-17 2012-01-03 Tdk Corporation Magnetoresistive element having a pair of side shields
US8289660B2 (en) * 2010-06-16 2012-10-16 Seagate Technology Llc Auxiliary magnetoresistive shield
US8582247B2 (en) * 2011-03-08 2013-11-12 Seagate Technology Llc Magnetic element with increased scissoring angle
US8705212B2 (en) * 2011-04-25 2014-04-22 Seagate Technology Llc Magnetic element with enhanced coupling portion
US8390963B2 (en) * 2011-04-25 2013-03-05 Seagate Technology Llc Trilayer reader with current constraint at the ABS

Also Published As

Publication number Publication date
KR20140056107A (ko) 2014-05-09
EP2728579B1 (en) 2016-12-14
CN103794223B (zh) 2018-06-01
CN103794223A (zh) 2014-05-14
KR101536634B1 (ko) 2015-07-14
EP2728579A3 (en) 2015-03-25
US8824107B2 (en) 2014-09-02
US20140118862A1 (en) 2014-05-01
EP2728579A2 (en) 2014-05-07
JP2014093118A (ja) 2014-05-19

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