KR101682437B1 - 이중 리더 구조 - Google Patents

이중 리더 구조 Download PDF

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Publication number
KR101682437B1
KR101682437B1 KR1020140112326A KR20140112326A KR101682437B1 KR 101682437 B1 KR101682437 B1 KR 101682437B1 KR 1020140112326 A KR1020140112326 A KR 1020140112326A KR 20140112326 A KR20140112326 A KR 20140112326A KR 101682437 B1 KR101682437 B1 KR 101682437B1
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KR
South Korea
Prior art keywords
sensor stack
shield
lead
layer
stack
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
KR1020140112326A
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English (en)
Korean (ko)
Other versions
KR20150026913A (ko
Inventor
빅터 보리스 사포즈니코브
하리 에델만
모함메드 샤리아 울라 패트와리
Original Assignee
시게이트 테크놀로지 엘엘씨
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Publication date
Application filed by 시게이트 테크놀로지 엘엘씨 filed Critical 시게이트 테크놀로지 엘엘씨
Publication of KR20150026913A publication Critical patent/KR20150026913A/ko
Application granted granted Critical
Publication of KR101682437B1 publication Critical patent/KR101682437B1/ko
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3945—Heads comprising more than one sensitive element
    • G11B5/3948—Heads comprising more than one sensitive element the sensitive elements being active read-out elements
    • 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
    • G11B5/115—Shielding devices arranged between heads or windings
    • 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
    • G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
    • G11B5/3945—Heads comprising more than one sensitive element
    • G11B5/3948—Heads comprising more than one sensitive element the sensitive elements being active read-out elements
    • G11B5/3951—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes
    • 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
    • G11B5/3945—Heads comprising more than one sensitive element
    • G11B5/3948—Heads comprising more than one sensitive element the sensitive elements being active read-out elements
    • G11B5/3951—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes
    • G11B5/3954—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes the active elements transducing on a single track
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/488—Disposition of heads
    • G11B5/4886—Disposition of heads relative to rotating disc
    • 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
    • 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
    • G11B5/3909—Arrangements using a magnetic tunnel junction

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Hall/Mr Elements (AREA)
KR1020140112326A 2013-08-30 2014-08-27 이중 리더 구조 Expired - Fee Related KR101682437B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/014,597 2013-08-30
US14/014,597 US9190078B2 (en) 2013-08-30 2013-08-30 Dual reader structure

Publications (2)

Publication Number Publication Date
KR20150026913A KR20150026913A (ko) 2015-03-11
KR101682437B1 true KR101682437B1 (ko) 2016-12-05

Family

ID=52582892

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140112326A Expired - Fee Related KR101682437B1 (ko) 2013-08-30 2014-08-27 이중 리더 구조

Country Status (4)

Country Link
US (2) US9190078B2 (enExample)
JP (1) JP2015049927A (enExample)
KR (1) KR101682437B1 (enExample)
CN (1) CN104424961B (enExample)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9190078B2 (en) * 2013-08-30 2015-11-17 Seagate Technology Llc Dual reader structure
US9524737B2 (en) * 2013-12-13 2016-12-20 Seagate Technology Llc Shielding and electrical contact design for devices with two or more read elements
US9406321B2 (en) 2014-02-27 2016-08-02 Seagate Technology Llc Read head with multiple reader stacks
US9396745B2 (en) * 2014-03-07 2016-07-19 Seagate Technology Llc Multi-sensor reader with different readback sensitivities
JP6309796B2 (ja) * 2014-03-20 2018-04-11 株式会社東芝 磁気ヘッド、磁気記録再生装置、および磁気ヘッドの製造方法
US9361910B2 (en) * 2014-07-03 2016-06-07 Seagate Technology Llc Leads coupled to top and bottom reader stacks of a reader
US9401163B2 (en) 2014-07-03 2016-07-26 Seagate Technology Llc Multi-stack reader with split middle shield
US9218831B1 (en) * 2014-09-17 2015-12-22 HGST Netherlands B.V. Side-by-side magnetic multi-input multi-output (MIMO) read head
US9721595B1 (en) * 2014-12-04 2017-08-01 Western Digital (Fremont), Llc Method for providing a storage device
US9269383B1 (en) * 2015-01-23 2016-02-23 HGST Netherlands B.V. Multi-sensor (MIMO) head having a back side antiferromagnetic middle shield
US9299370B1 (en) * 2015-03-11 2016-03-29 HGST Netherlands B.V. MIMO read head with soft bias and split shield
US9685177B2 (en) * 2015-07-08 2017-06-20 Seagate Technology Llc Sensor stabilization in a multiple sensor magnetic reproducing device
JP6407817B2 (ja) * 2015-07-24 2018-10-17 株式会社東芝 磁気ヘッド、磁気ヘッドアセンブリ、および磁気記録再生装置
US9536549B1 (en) * 2015-08-14 2017-01-03 Seagate Technology Llc Multiple sensor magnetic reproducing device with reduced inter-sensor spacing
US9552834B1 (en) * 2015-09-28 2017-01-24 Seagate Technology Llc Stabilization of one or more upper sensors in multi-sensor readers
US9570100B1 (en) * 2015-10-21 2017-02-14 Western Digital Technologies, Inc. Two-dimensional magnetic recording device with center shield stabilized by recessed AFM layer
US9870791B1 (en) 2016-04-15 2018-01-16 Seagate Technology Llc Stabilization of one or more upper sensors in multi-sensor readers
US10586562B1 (en) 2017-01-13 2020-03-10 Seagate Technology Llc Read head having sensors with conflicting design characteristics
US10468055B1 (en) 2017-11-01 2019-11-05 Seagate Technology Llc Multi-sensor reader having oppositely biased sensing layers
JP6383079B2 (ja) * 2017-11-22 2018-08-29 株式会社東芝 磁気ヘッド、磁気記録再生装置、および磁気ヘッドの製造方法
WO2020110360A1 (ja) * 2018-11-29 2020-06-04 国立研究開発法人物質・材料研究機構 磁気抵抗効果素子、磁気センサ、再生ヘッドおよび磁気記録再生装置
US10714131B1 (en) 2019-02-14 2020-07-14 Headway Technologies, Inc. Unified dual free layer reader with shared reference layer to enable reduced reader-to-reader separation
US11380355B2 (en) 2020-10-27 2022-07-05 Headway Technologies, Inc. Adaptive bias control for magnetic recording head
US11557319B1 (en) 2021-08-24 2023-01-17 Seagate Technology Llc Read offset calibration for error recovery
US11568895B1 (en) 2021-09-03 2023-01-31 Seagate Technology Llc Read offset calibration for error recovery
US11514934B1 (en) 2021-10-27 2022-11-29 Western Digital Technologies, Inc. Planar design for sensors in a dual free layer read head
US12322420B2 (en) * 2022-11-01 2025-06-03 Western Digital Technologies, Inc. Middle shields two-dimensional magnetic recording read heads
US12131759B2 (en) 2022-11-08 2024-10-29 Western Digital Technologies, Inc. Two-dimensional magnetic recording read head with TaOx layer for flat middle shield topography and method of forming thereof
US12308052B2 (en) 2023-04-13 2025-05-20 Western Digital Technologies, Inc. Produce thinner DTS and adjustable capacitance for TDMR heads

Family Cites Families (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52137371A (en) 1976-05-13 1977-11-16 Fujitsu Ltd Position control system
JPS58182115A (ja) * 1982-04-16 1983-10-25 Hitachi Ltd 波形等化回路
US5323285A (en) * 1992-06-23 1994-06-21 Eastman Kodak Company Shielded dual element magnetoresistive reproduce head exhibiting high density signal amplification
US5751521A (en) 1996-09-23 1998-05-12 International Business Machines Corporation Differential spin valve sensor structure
US6185079B1 (en) * 1998-11-09 2001-02-06 International Business Machines Corporation Disk drive with thermal asperity reduction circuitry using a magnetic tunnel junction sensor
US6801411B1 (en) * 1999-02-10 2004-10-05 Western Digital (Fremont), Inc. Dual stripe spin valve sensor without antiferromagnetic pinning layer
US6278589B1 (en) 1999-03-30 2001-08-21 International Business Machines Corporation Dual GMR sensor with a single AFM layer
US6643103B1 (en) * 2000-01-05 2003-11-04 Seagate Technology Llc Very high linear resolution CPP differential dual spin valve magnetoresistive head
US6680827B2 (en) * 2000-08-07 2004-01-20 Tdk Corporation Dual spin valve CPP MR with flux guide between free layers thereof
US6597546B2 (en) * 2001-04-19 2003-07-22 International Business Machines Corporation Tunnel junction sensor with an antiferromagnetic (AFM) coupled flux guide
JP3849460B2 (ja) * 2001-05-29 2006-11-22 ソニー株式会社 磁気抵抗効果素子、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
US6636389B2 (en) * 2001-08-03 2003-10-21 International Business Machines Corporation GMR magnetic transducer with nano-oxide exchange coupled free layers
JP2003338012A (ja) 2002-05-15 2003-11-28 Sony Corp 磁気記録ヘッド装置、磁気再生ヘッド装置及び磁気ヘッド装置並びにこれらを用いたテープドライブ装置及びディスクドライブ装置
JP3648504B2 (ja) 2002-09-06 2005-05-18 株式会社東芝 磁気抵抗効果素子、磁気ヘッドおよび磁気再生装置
US6819530B2 (en) * 2002-09-25 2004-11-16 International Business Machines Corporation Current perpendicular to the planes (CPP) sensor with free layer stabilized by current field
US7234228B2 (en) * 2002-12-03 2007-06-26 Headway Technologies, Inc. Method of fabricating novel seed layers for fabricating spin valve heads
US7298595B2 (en) * 2003-09-26 2007-11-20 Hitachi Global Storage Technologies Netherlands B.V. Differential GMR sensor with multi-layer bias structure between free layers of first and second self-pinned GMR sensors
US7116530B2 (en) * 2003-09-30 2006-10-03 Hitachi Global Storage Technologies Netherlands B.V. Thin differential spin valve sensor having both pinned and self pinned structures for reduced difficulty in AFM layer polarity setting
US7436632B2 (en) * 2004-06-30 2008-10-14 Seagate Technology Llc Differential/dual CPP recording head
US7551393B2 (en) 2004-08-23 2009-06-23 International Business Machines Corporation Tape recording head with multiple planes of transducer arrays
US7606007B2 (en) * 2006-02-17 2009-10-20 Hitachi Global Storage Technologies Netherlands B.V. Shield stabilization for magnetoresistive sensors
US7656610B1 (en) 2006-03-27 2010-02-02 Storage Technology Corporation Bi-directional magnetic recording head built on a common substrate
US7751148B1 (en) 2006-03-27 2010-07-06 Oracle America, Inc. Multi-level, multi-track magnetic recording head
US7881018B2 (en) * 2007-09-05 2011-02-01 Hitachi Global Storage Technologies Netherlands B.V. Differential current perpendicular to plane giant magnetoresistive sensor structure having improved robustness against spin torque noise
US8014108B2 (en) 2008-02-08 2011-09-06 Tdk Corporation Magnetoresistive device of the CPP type, utilizing insulating layers interposed in shield layers to form a closed magnetic path usable in a disk system
US8514524B2 (en) 2008-05-09 2013-08-20 Headway Technologies, Inc. Stabilized shields for magnetic recording heads
US8896972B2 (en) * 2010-02-08 2014-11-25 Seagate Technology Llc Magnetic read head with a read function feature
US20110216432A1 (en) * 2010-03-05 2011-09-08 Tdk Corporation Magnetic head comprising two magnetic field sensing part
US8437106B2 (en) 2010-10-08 2013-05-07 Tdk Corporation Thin film magnetic head including spin-valve film with free layer magnetically connected with shield
US8462467B2 (en) 2010-10-08 2013-06-11 Tdk Corporation Thin film magnetic head including soft layer magnetically connected with shield
US8797692B1 (en) 2012-09-07 2014-08-05 Western Digital (Fremont), Llc Magnetic recording sensor with AFM exchange coupled shield stabilization
US8630069B1 (en) 2012-10-04 2014-01-14 HGST Netherlands B.V. Magnetic shield having improved resistance to the hard bias magnetic field
US8576518B1 (en) 2012-10-30 2013-11-05 HGST Netherlands B.V. Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor with exchange-coupled side shield structure
US8749926B1 (en) 2012-11-30 2014-06-10 HGST Netherlands B.V. Scissor magnetic read head with wrap-around magnetic shield
US8760820B1 (en) 2012-11-30 2014-06-24 Seagate Technology Llc Magnetic element with coupled side shield
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
US8638530B1 (en) 2013-02-20 2014-01-28 HGST Netherlands B.V. Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor having a top shield with an antiparallel structure
US8780505B1 (en) 2013-03-12 2014-07-15 Western Digital (Fremont), Llc Method and system for providing a read transducer having an improved composite magnetic shield
US8824106B1 (en) * 2013-05-18 2014-09-02 Headway Technologies, Inc. Two sensor reader for hard disk drive (HDD)
US8780506B1 (en) 2013-06-20 2014-07-15 HGST Netherlands B.V. Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor with side shields and an antiparallel structure top shield
US9190078B2 (en) * 2013-08-30 2015-11-17 Seagate Technology Llc Dual reader structure
US8873204B1 (en) * 2014-07-25 2014-10-28 HGST Netherlands B.V. Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor structure with multiple stacked sensors and center shield with CoFeB insertion layer
US9087527B1 (en) * 2014-10-28 2015-07-21 Western Digital (Fremont), Llc Apparatus and method for middle shield connection in magnetic recording transducers

Also Published As

Publication number Publication date
KR20150026913A (ko) 2015-03-11
US20150371670A1 (en) 2015-12-24
CN104424961A (zh) 2015-03-18
US9190078B2 (en) 2015-11-17
CN104424961B (zh) 2018-07-03
US20150062735A1 (en) 2015-03-05
US9324342B2 (en) 2016-04-26
JP2015049927A (ja) 2015-03-16

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