JP2014010884A - 装置、磁気素子、および変換ヘッド - Google Patents
装置、磁気素子、および変換ヘッド Download PDFInfo
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 186
- 230000002463 transducing effect Effects 0.000 title claims abstract description 4
- 230000005415 magnetization Effects 0.000 claims abstract description 73
- 230000007246 mechanism Effects 0.000 claims description 45
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000005290 antiferromagnetic effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000003475 lamination Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 105
- 238000010586 diagram Methods 0.000 description 12
- 238000013500 data storage Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 7
- 230000004907 flux Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000001808 coupling effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 239000002885 antiferromagnetic material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
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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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same 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
- G11B5/3906—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
-
- 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)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
【解決手段】変換ヘッドとして実装可能な磁気素子(160)が一般的に提供される。さまざまな実施例では、所定の磁化を有する磁気自由層(166)を含む磁性積層体(162)を構成することができる。側方シールド層状構造(164)は、空気軸受面(ABS)上で磁気積層体(162)と分離され、上記所定の磁化と反対のバイアス磁化にバイアスすることできる。
【選択図】図3A
Description
さまざまな実施例は、一般に、少なくとも磁気読み出しが可能な磁気素子に関する。
データ記憶デバイスのより高いデータビット密度とより速いデータ転送レートに向けて産業界の需要が高まるにつれて、さまざまなデータ読み出しおよび書き込み構成要素の物理的および磁気的なサイズは、工程および設計の変動性に強く影響されるようになる。非ピン止め(non-pinned)3層磁気応答積層体など、より小さなデータアクセス素子の導入によって、磁気シールド間のシールド対シールド間隔を縮小させ、データビット感度を増加させることができるが、工程のわずかな変動により磁気的な非対称性の影響を受けやすくなることがある。それゆえ、設計および工程の変動性の影響を受け難くしながら、データビット分解能の向上を実現するように構成された磁気素子は、産業界で継続的に要求されている。
Claims (20)
- 所定の磁化を有する磁気自由層を含む磁気積層体と、
空気軸受面(ABS)上で前記磁気積層体と分離され、前記所定の磁化と反対のバイアス磁化にバイアスされた側方シールド層状構造とを備える、装置。 - 前記磁気積層体は、磁気ピン止め参照構造なしで第1および第2の磁気自由層を含む3層読み出しセンサとして構成される、請求項1に記載の装置。
- 前記側方シールド層状構造の第1のサブ層は、前記ABS上で前記第1の磁気自由層と横方向に整列され、
前記側方シールド層状構造の第2のサブ層は、前記ABS上で前記第2の磁気自由層と横方向に整列される、請求項2に記載の装置。 - 前記第1のサブ層は、前記所定の磁化と反対の第1のバイアス磁化を有する、請求項3に記載の装置。
- 前記第2のサブ層は、前記所定の磁化に一致し、前記第1のバイアス磁化と反対の第2のバイアス磁化を有する、請求項4に記載の装置。
- 所定の磁化を有する磁気自由層を含む磁気積層体を備え、
前記磁気積層体は、空気軸受面(ABS)上で、第1および第2の側方シールド層状構造の間に、前記第1および第2の側方シールド層状構造と間を隔てて配置され、
各側方シールド層状構造は、前記所定の磁化と反対のバイアス磁化にバイアスされている、磁気素子。 - 前記磁気積層体は、各側方シールド層状構造の第1および第2のバイアスサブ層とそれぞれ横方向に整列される第1および第2の磁気自由層を含み、
前記第1および第2の磁気自由層は、実質的に反対の方向を向いている第1および第2の所定の磁化に設定されている、請求項6に記載の磁気素子。 - 前記第1および第2のバイアスサブ層に互いに反対の第1および第2のバイアス磁化をそれぞれ与えるように、第1のバイアス機構が少なくとも一方の側方シールド層状構造と前記ABS上で接している、請求項7に記載の磁気素子。
- 前記第1のバイアス機構は、異なるブロッキング温度を有する反強磁性層の層状構造である、請求項8に記載の磁気素子。
- 前記磁気積層体に前記所定の磁化を与えるように、第2のバイアス機構が前記磁気積層体の前記第1の磁気自由層と接している、請求項8に記載の磁気素子。
- 前記ABSから遠位に配置される後方バイアス磁石が前記磁気積層体に前記所定の磁化を与える、請求項10に記載の磁気素子。
- 前記第1のバイアス機構の反対側で、第3のバイアス機構が少なくとも一方の側方シールド層状構造と前記ABS上で接している、請求項8に記載の磁気素子。
- 前記第2のバイアス機構は、上部シールドの厚み低減部分に位置する、請求項10に記載の磁気素子。
- 独立した所定の磁化を有するように構成された第1および第2の磁気自由層を含む3層磁気積層体と、
空気軸受面(ABS)上で前記磁気積層体と分離され、前記独立した所定の磁化とそれぞれ反対のバイアス磁化に各々がバイアスされた第1および第2の磁気サブ層を用いて構成された側方シールド層状構造とを備える、変換ヘッド。 - 第1の結合層が前記第1および第2の磁気サブ層を分離し、第2の結合層が前記側方シールド層状構造を上部シールドに接続する、請求項14に記載の変換ヘッド。
- 前記第1および第2の結合層は、RKKY結合を提供するように構成される、請求項15に記載の変換ヘッド。
- 前記上部シールドは、前記第1の磁気自由層に取り付けられたバイアス機構から前記第1および第2の磁気サブ層にバイアス磁化を伝達する、請求項15に記載の変換ヘッド。
- 第1の結合層が前記第1および第2の磁気サブ層を分離し、第1のバイアス機構が前記側方シールド層状構造と上部シールドとの間に配置される、請求項14に記載の変換ヘッド。
- 第2のバイアス機構が、前記上部シールドの反対側で、底部シールドの厚み低減部分において前記第2の磁気自由層と接触する、請求項18に記載の変換ヘッド。
- 前記第1の結合層は負のRKKY結合を提供する、請求項17に記載の変換ヘッド。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/539,099 US8780508B2 (en) | 2012-06-29 | 2012-06-29 | Magnetic element with biased side shield lamination |
US13/539,099 | 2012-06-29 |
Publications (2)
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JP2014010884A true JP2014010884A (ja) | 2014-01-20 |
JP5785588B2 JP5785588B2 (ja) | 2015-09-30 |
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JP2013129436A Expired - Fee Related JP5785588B2 (ja) | 2012-06-29 | 2013-06-20 | 装置、磁気素子、および変換ヘッド |
Country Status (5)
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US (1) | US8780508B2 (ja) |
EP (1) | EP2680266A1 (ja) |
JP (1) | JP5785588B2 (ja) |
KR (1) | KR101467979B1 (ja) |
CN (1) | CN103514897B (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016045978A (ja) * | 2014-08-21 | 2016-04-04 | エイチジーエスティーネザーランドビーブイ | 磁気用途用の多重入力多重出力センサーの構成 |
JP2018174965A (ja) * | 2017-04-03 | 2018-11-15 | 株式会社トプコン | 眼科情報処理装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8711524B2 (en) * | 2008-02-05 | 2014-04-29 | Headway Technologies, Inc. | Patterned MR device with controlled shape anisotropy |
US8995096B2 (en) * | 2013-03-16 | 2015-03-31 | Seagate Technology Llc | Magnetic element side shield with diffusion barrier |
JP5697708B2 (ja) * | 2013-04-01 | 2015-04-08 | 株式会社東芝 | 磁気抵抗効果素子、磁気ヘッド、磁気ヘッドアセンブリ、磁気記録再生装置及び磁気抵抗効果素子の製造方法 |
US20150147481A1 (en) * | 2013-11-20 | 2015-05-28 | HGST Nertherlands B..V. | Method for making a scissoring-type current-perpendicular-to-the-plane (cpp) magnetoresistive sensor with exchange-coupled soft side shields |
US9076468B1 (en) * | 2014-03-12 | 2015-07-07 | HGST Netherlands B.V. | Scissor magnetic read sensor with shape enhanced soft magnetic side shield for improved stability |
US9230576B1 (en) * | 2014-09-08 | 2016-01-05 | HGST Netherlands B.V. | Scissor reader with side shield decoupled from bias material |
US9007725B1 (en) | 2014-10-07 | 2015-04-14 | Western Digital (Fremont), Llc | Sensor with positive coupling between dual ferromagnetic free layer laminates |
US9449621B1 (en) * | 2015-03-26 | 2016-09-20 | Western Digital (Fremont), Llc | Dual free layer magnetic reader having a rear bias structure having a high aspect ratio |
US9472216B1 (en) * | 2015-09-23 | 2016-10-18 | Western Digital (Fremont), Llc | Differential dual free layer magnetic reader |
US9886974B2 (en) | 2015-10-30 | 2018-02-06 | Seagate Technology Llc | Read head free layer having front and rear portions biased at different levels |
US11380355B2 (en) * | 2020-10-27 | 2022-07-05 | Headway Technologies, Inc. | Adaptive bias control for magnetic recording head |
CN114664330A (zh) * | 2020-12-23 | 2022-06-24 | 西部数据技术公司 | 具有与屏蔽件解耦的磁性籽层的双自由层读取器头 |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002319112A (ja) * | 2001-02-01 | 2002-10-31 | Toshiba Corp | 磁気抵抗効果ヘッドおよび垂直磁気記録再生装置 |
JP2003264324A (ja) * | 2002-03-12 | 2003-09-19 | Alps Electric Co Ltd | 磁気検出素子 |
JP2003303406A (ja) * | 2002-04-08 | 2003-10-24 | Hitachi Ltd | 磁気抵抗効果ヘッド及び磁気ヘッド |
JP2004178656A (ja) * | 2002-11-26 | 2004-06-24 | Hitachi Ltd | 磁気記録ヘッド及び磁気記録再生装置 |
JP2004259330A (ja) * | 2003-02-25 | 2004-09-16 | Hitachi Ltd | 磁気ヘッド |
JP2005203063A (ja) * | 2004-01-19 | 2005-07-28 | Hitachi Global Storage Technologies Netherlands Bv | 磁気ヘッド及び磁気記録再生装置 |
JP2009032382A (ja) * | 2007-07-30 | 2009-02-12 | Tdk Corp | Cpp型磁界検出素子及びその製造方法 |
US20110051291A1 (en) * | 2009-08-31 | 2011-03-03 | Tdk Corporation | CPP-type thin film magnetic head provided with side shields |
US20110279923A1 (en) * | 2010-05-17 | 2011-11-17 | Tdk Corporation | Magnetoresistive element having a pair of side shields |
JP2012119053A (ja) * | 2010-11-30 | 2012-06-21 | Seagate Technology Llc | 装置および磁気素子 |
Family Cites Families (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4740855A (en) | 1985-10-18 | 1988-04-26 | Siemens Aktiengesellschaft | Magnetic thin-film head having a main and an auxiliary pole for vertical magnetization |
US4935832A (en) | 1987-04-01 | 1990-06-19 | Digital Equipment Corporation | Recording heads with side shields |
US5576914A (en) | 1994-11-14 | 1996-11-19 | Read-Rite Corporation | Compact read/write head having biased GMR element |
US5515221A (en) | 1994-12-30 | 1996-05-07 | International Business Machines Corporation | Magnetically stable shields for MR head |
US5818685A (en) | 1997-05-05 | 1998-10-06 | Read-Rite Corporation | CIP GMR sensor coupled to biasing magnet with spacer therebetween |
DE19983944T1 (de) | 1999-04-14 | 2002-03-21 | Seagate Technology Llc | Hochempfindliche Spin-Valve-Köpfe mit einem selbstausgerichteten Demagnetisierungsfeld-Ausgleichselement |
US6700760B1 (en) | 2000-04-27 | 2004-03-02 | Seagate Technology Llc | Tunneling magnetoresistive head in current perpendicular to plane mode |
JP3618654B2 (ja) | 2000-09-11 | 2005-02-09 | 株式会社東芝 | 磁気抵抗効果素子、磁気ヘッド及び磁気記録再生装置 |
WO2002025642A1 (en) | 2000-09-19 | 2002-03-28 | Seagate Technology Llc | Giant magnetoresistive sensor having self-consistent demagnetization fields |
JP3657875B2 (ja) * | 2000-11-27 | 2005-06-08 | Tdk株式会社 | トンネル磁気抵抗効果素子 |
US6893734B2 (en) * | 2000-12-22 | 2005-05-17 | Alps Electric Co., Ltd. | Magnetic sensing element with improved sensitivity and method for making the same |
US6847509B2 (en) | 2001-02-01 | 2005-01-25 | Kabushiki Kaisha Toshiba | Magnetoresistive head and perpendicular magnetic recording-reproducing apparatus |
US6667862B2 (en) | 2001-02-20 | 2003-12-23 | Carnegie Mellon University | Magnetoresistive read head having permanent magnet on top of magnetoresistive element |
US6597546B2 (en) | 2001-04-19 | 2003-07-22 | International Business Machines Corporation | Tunnel junction sensor with an antiferromagnetic (AFM) coupled flux guide |
US7035062B1 (en) | 2001-11-29 | 2006-04-25 | Seagate Technology Llc | Structure to achieve sensitivity and linear density in tunneling GMR heads using orthogonal magnetic alignments |
JP3918580B2 (ja) * | 2002-02-26 | 2007-05-23 | ヤマハ株式会社 | マルチメディア情報符号化装置、マルチメディア情報再生装置、マルチメディア情報符号化処理プログラム及びマルチメディア情報再生処理プログラム |
JP2004103120A (ja) * | 2002-09-10 | 2004-04-02 | Hitachi Ltd | 差動バイアス型磁区制御構造を有する記録再生分離型磁気ヘッド |
JP3895281B2 (ja) | 2003-02-18 | 2007-03-22 | Tdk株式会社 | パターン形成方法、これを用いた磁気抵抗効果素子及び磁気ヘッドの製造方法、並びに、ヘッドサスペンションアセンブリ及び磁気ディスク装置 |
US7719802B2 (en) | 2003-09-23 | 2010-05-18 | Seagate Technology Llc | Magnetic sensor with electrically defined active area dimensions |
US7093347B2 (en) | 2003-12-05 | 2006-08-22 | Seagate Technology Llc | Method of making a current-perpendicular to the plane (CPP) magnetoresistive (MR) sensor |
US7236333B2 (en) | 2003-12-11 | 2007-06-26 | Seagate Technology Llc | Domain wall free shields of MR sensors |
US7414816B2 (en) | 2004-05-28 | 2008-08-19 | Hitachi Global Storage Technologies Netherlands B.V. | Planar magnetic thin film head |
US7446986B2 (en) * | 2004-08-31 | 2008-11-04 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic tunnel junction with in stack biasing layer providing orthogonal exchange coupling |
JP4377777B2 (ja) | 2004-08-31 | 2009-12-02 | 株式会社東芝 | 磁気ヘッド、ヘッドサスペンションアッセンブリ、および磁気再生装置 |
US7446979B2 (en) | 2004-09-30 | 2008-11-04 | Hitachi Global Storage Technologies Netherlands B.V. | Laminated draped shield for CPP read sensors |
US7295401B2 (en) | 2004-10-27 | 2007-11-13 | Hitachi Global Storage Technologies Netherlands B.V. | Laminated side shield for perpendicular write head for improved performance |
US7333304B2 (en) | 2004-11-04 | 2008-02-19 | Hitachi Global Storage Technologies Netherlands B.V. | CPP sensor having hard bias stabilization placed at back edge of the stripe |
US7369374B2 (en) | 2005-04-18 | 2008-05-06 | Hitachi Global Storage Technologies Netherlands B.V. | Current in plane magnetoresistive sensor having a contiguous hard bias layer located at back edge of stripe height |
US7467459B2 (en) | 2005-04-18 | 2008-12-23 | Hitachi Global Storage Technologies Netherlands B.V. | Method for manufacturing a current in plane magnetoresistive sensor having a contiguous hard bias layer located at back edge of stripe height |
JP2007005417A (ja) | 2005-06-22 | 2007-01-11 | Alps Electric Co Ltd | 磁気検出素子及びその製造方法 |
US7606007B2 (en) | 2006-02-17 | 2009-10-20 | Hitachi Global Storage Technologies Netherlands B.V. | Shield stabilization for magnetoresistive sensors |
US7979978B2 (en) | 2007-03-27 | 2011-07-19 | Headway Technologies, Inc. | Method for manufacturing a self-aligned full side shield PMR |
JP2008276816A (ja) | 2007-04-25 | 2008-11-13 | Tdk Corp | 垂直磁気記録ヘッド |
US7916429B2 (en) | 2007-07-30 | 2011-03-29 | Tdk Corporation | Magnetic field detecting element having thin stack with a plurality of free layers and thick bias magnetic layer |
US8149546B2 (en) | 2007-10-26 | 2012-04-03 | Tdk Corporation | Magnetic field detecting element including tri-layer stack with stepped portion |
US7974048B2 (en) * | 2007-11-28 | 2011-07-05 | Tdk Corporation | Magneto-resistive effect device of CPP type having shield layers coupled with ferromagnetic layers |
US20090168241A1 (en) | 2007-12-26 | 2009-07-02 | Masafumi Mochizuki | Magnetic disk drive |
US8795763B2 (en) | 2007-12-26 | 2014-08-05 | Headway Technologies, Inc. | Perpendicular magnetic medium with shields between tracks |
US7876534B2 (en) | 2008-01-15 | 2011-01-25 | Tdk Corporation | Magneto-resistive effect device of the CPP type, and magnetic disk system |
JP2009259354A (ja) | 2008-04-18 | 2009-11-05 | Hitachi Global Storage Technologies Netherlands Bv | 磁気ヘッド及びその製造方法 |
US8514524B2 (en) | 2008-05-09 | 2013-08-20 | Headway Technologies, Inc. | Stabilized shields for magnetic recording heads |
US20090302403A1 (en) * | 2008-06-05 | 2009-12-10 | Nguyen Paul P | Spin torque transfer magnetic memory cell |
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 |
US8189303B2 (en) | 2008-08-12 | 2012-05-29 | Tdk Corporation | Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layers |
US8125746B2 (en) * | 2009-07-13 | 2012-02-28 | Seagate Technology Llc | Magnetic sensor with perpendicular anisotrophy free layer and side shields |
US8179642B2 (en) | 2009-09-22 | 2012-05-15 | Tdk Corporation | Magnetoresistive effect element in CPP structure and magnetic disk device |
US8144437B2 (en) | 2010-06-28 | 2012-03-27 | Tdk Corporation | Magnetoresistive element and thin film magnetic head |
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 |
US8922950B2 (en) * | 2011-05-06 | 2014-12-30 | Seagate Technology Llc | Multi-layer magnetoresistive shield with transition metal layer |
-
2012
- 2012-06-29 US US13/539,099 patent/US8780508B2/en active Active
-
2013
- 2013-05-01 EP EP13166114.2A patent/EP2680266A1/en not_active Withdrawn
- 2013-06-04 CN CN201310217598.5A patent/CN103514897B/zh not_active Expired - Fee Related
- 2013-06-20 JP JP2013129436A patent/JP5785588B2/ja not_active Expired - Fee Related
- 2013-06-27 KR KR1020130074514A patent/KR101467979B1/ko active IP Right Grant
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002319112A (ja) * | 2001-02-01 | 2002-10-31 | Toshiba Corp | 磁気抵抗効果ヘッドおよび垂直磁気記録再生装置 |
JP2003264324A (ja) * | 2002-03-12 | 2003-09-19 | Alps Electric Co Ltd | 磁気検出素子 |
JP2003303406A (ja) * | 2002-04-08 | 2003-10-24 | Hitachi Ltd | 磁気抵抗効果ヘッド及び磁気ヘッド |
JP2004178656A (ja) * | 2002-11-26 | 2004-06-24 | Hitachi Ltd | 磁気記録ヘッド及び磁気記録再生装置 |
JP2004259330A (ja) * | 2003-02-25 | 2004-09-16 | Hitachi Ltd | 磁気ヘッド |
JP2005203063A (ja) * | 2004-01-19 | 2005-07-28 | Hitachi Global Storage Technologies Netherlands Bv | 磁気ヘッド及び磁気記録再生装置 |
JP2009032382A (ja) * | 2007-07-30 | 2009-02-12 | Tdk Corp | Cpp型磁界検出素子及びその製造方法 |
US20110051291A1 (en) * | 2009-08-31 | 2011-03-03 | Tdk Corporation | CPP-type thin film magnetic head provided with side shields |
US20110279923A1 (en) * | 2010-05-17 | 2011-11-17 | Tdk Corporation | Magnetoresistive element having a pair of side shields |
JP2012119053A (ja) * | 2010-11-30 | 2012-06-21 | Seagate Technology Llc | 装置および磁気素子 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016045978A (ja) * | 2014-08-21 | 2016-04-04 | エイチジーエスティーネザーランドビーブイ | 磁気用途用の多重入力多重出力センサーの構成 |
JP2018174965A (ja) * | 2017-04-03 | 2018-11-15 | 株式会社トプコン | 眼科情報処理装置 |
Also Published As
Publication number | Publication date |
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KR101467979B1 (ko) | 2014-12-02 |
EP2680266A1 (en) | 2014-01-01 |
CN103514897A (zh) | 2014-01-15 |
CN103514897B (zh) | 2017-07-14 |
KR20140002530A (ko) | 2014-01-08 |
US8780508B2 (en) | 2014-07-15 |
JP5785588B2 (ja) | 2015-09-30 |
US20140002930A1 (en) | 2014-01-02 |
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