JP2015011751A - 磁気抵抗センサおよび装置 - Google Patents
磁気抵抗センサおよび装置 Download PDFInfo
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- JP2015011751A JP2015011751A JP2014128967A JP2014128967A JP2015011751A JP 2015011751 A JP2015011751 A JP 2015011751A JP 2014128967 A JP2014128967 A JP 2014128967A JP 2014128967 A JP2014128967 A JP 2014128967A JP 2015011751 A JP2015011751 A JP 2015011751A
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- layer
- sensor
- bottom shield
- afm
- abs
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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
- G11B5/33—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
- G11B5/3929—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
- G11B5/127—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)
Abstract
【解決手段】MR(磁気抵抗)センサ200を使用した読取装置は、センサ積層体206のピン止め層236の層と、そのピン止め層236の層第1に近接するAFM(反強磁性)安定化底部シールド202とを含み、AFM安定化底部シールド202は、ピン止め層236の層に磁気的に結合される。AFM安定化底部シールド202は、センサ積層体206に近接するピン止め層212、AFM層214,シード層216を含む。
【選択図】図2
Description
Claims (21)
- 第1の層を含むセンサ積層体と、
前記第1の層に近接するAFM安定化底部シールドであって、前記第1の層に磁気的に結合されている、AFM安定化底部シールドと、を備える、装置。 - 前記AFM安定化底部シールドは、
前記センサ積層体の前記第1の層に近接するSAF構造の上部層と、
前記SAF構造のピン止め層と、をさらに備える、請求項1に記載の装置。 - 前記SAF構造の前記上部層は、薄い非磁性層を使用して前記SAF構造の前記ピン止め層から分離される、請求項2に記載の装置。
- 前記SAF構造の前記ピン止め層のピン止め方向は、前記装置の空気軸受面(ABS)に直交する成分を含む、請求項2に記載の装置。
- 前記センサ積層体の前記第1の層の前記ピン止め方向は、前記装置の空気軸受面(ABS)に直交する成分を含む、請求項4に記載の装置。
- 前記第1の層と前記AFM安定化底部シールドとの間に非磁性層をさらに備える、請求項1に記載の装置。
- 前記センサ積層体は、前記装置のABSに平行な磁性配向を持つ自由層をさらに備える、請求項1に記載の装置。
- 前記自由層は、永久磁石および側部シールドのうちの少なくとも1つによってバイアスされる、請求項7に記載の装置。
- 静止状態において、前記装置の前記ABSに近接する前記センサ積層体の基準層の磁性配向の方向が、前記自由層の前記磁性配向に対して鈍角を形成する、請求項7に記載の装置。
- 前記AFM安定化底部シールドは、
前記センサ積層体に近接するSAF構造の上部層であって、前記SAF構造の前記上部層における磁性配向が、前記ABSに平行な前記ABS近くの第1の成分を含む、上部層と、
前記SAF構造のピン止め層であって、前記SAF構造の前記ピン止め層における前記磁性配向が、前記ABSに平行な第2の成分を含む、ピン止め層と、をさらに備え、
前記第1の成分および前記第2の成分が互いに実質的に反平行である、請求項7に記載の装置。 - 前記SAF構造の前記ピン止め層のピン止め方向と前記装置の空気軸受面(ABS)との間の角度は、30度〜150度である、請求項2に記載の装置。
- 前記第1の層の前記磁性配向は、前記センサ積層体の基準層の磁性配向に対して実質的に反平行である、請求項11に記載の装置。
- センサピン止め層、センサ基準層、およびセンサ自由層を含むセンサ積層体と、
底部シールドであって、前記底部シールドが底部シールドAFM層および底部シールドピン止め層を含み、前記底部シールドAFM層が前記底部シールドピン止め層を安定化させる、底部シールドと、を備える、磁気抵抗センサ。 - 前記底部シールドは、前記センサ積層体に近接するSAF構造の上部層をさらに備える、請求項13に記載の磁気抵抗センサ。
- 前記底部シールドピン止め層のピン止め方向は、前記磁気抵抗センサのABSに直交する成分を含む、請求項14に記載の磁気抵抗センサ。
- SAF構造の前記上部層の磁化方向は、前記磁気抵抗センサのABSに直交し、かつ前記底部シールドピン止め層の磁化方向に反平行である成分を含む、請求項15に記載の磁気抵抗センサ。
- 前記センサ積層体と前記底部シールドとの間に非磁性材料の層をさらに備える、請求項15に記載の磁気抵抗センサ。
- 前記センサ積層体の前記自由層は側部シールドおよび永久磁石のうちの少なくとも1つを使用してバイアスされ、前記自由層の磁性配向は前記磁気抵抗センサの前記ABSに実質的に平行である、請求項15に記載の磁気抵抗センサ。
- 磁気抵抗センサの底部シールドであって、前記底部シールドは、前記底部シールド内のAFM層を使用して安定化され、前記AFM層は底部シールドピン止め層内で磁性配向を生成し、前記磁性配向は前記磁気抵抗センサのABSに直交する成分を有する、底部シールドを備える、装置。
- センサ積層体をさらに備え、前記センサ積層体は前記底部シールドピン止め層と磁気的に結合されるセンサピン止め層を含む、請求項19に記載の装置。
- 前記センサピン止め層の磁性配向は前記磁気抵抗センサのABSに直交する成分を有する、請求項20に記載の装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/930,150 | 2013-06-28 | ||
US13/930,150 US9251815B2 (en) | 2013-06-28 | 2013-06-28 | Magnetoresistive sensor with AFM-stabilized bottom shield |
Publications (1)
Publication Number | Publication Date |
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JP2015011751A true JP2015011751A (ja) | 2015-01-19 |
Family
ID=52115369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2014128967A Pending JP2015011751A (ja) | 2013-06-28 | 2014-06-24 | 磁気抵抗センサおよび装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9251815B2 (ja) |
JP (1) | JP2015011751A (ja) |
KR (1) | KR101662604B1 (ja) |
CN (1) | CN104252867B (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9691417B1 (en) | 2013-06-28 | 2017-06-27 | Seagate Technology Llc | Magnetoresistive sensor having a synthetic antiferromagnetic bottom shield |
US9431031B1 (en) | 2015-03-24 | 2016-08-30 | Western Digital (Fremont), Llc | System and method for magnetic transducers having multiple sensors and AFC shields |
TWI789343B (zh) | 2016-02-01 | 2023-01-11 | 丹麥商碩騰丹麥有限公司 | 微流體分析系統、執行分析的微流體匣及方法 |
US10840001B2 (en) * | 2018-03-06 | 2020-11-17 | Allegro Microsystems, Llc | Magnetoresistance element with extended linear response to magnetic fields |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010086648A (ja) * | 2008-09-29 | 2010-04-15 | Tdk Corp | 一対のシールド層に結合する一対の自由層を有する磁気抵抗効果素子 |
JP2012533141A (ja) * | 2009-07-08 | 2012-12-20 | シーゲイト テクノロジー エルエルシー | 複合磁気シールドを有する磁気センサ |
JP2013008439A (ja) * | 2011-06-23 | 2013-01-10 | Seagate Technology Llc | センサ積層体、シールド、および第1のシールド安定化構造を備える装置、センサ積層体、シールド、および磁性層を備える装置、データ記憶媒体、記録ヘッド、およびアームを備える装置、ならびに、センサ構造を設け、これをアニールするステップを備える方法 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3974587B2 (ja) * | 2003-04-18 | 2007-09-12 | アルプス電気株式会社 | Cpp型巨大磁気抵抗効果ヘッド |
US7382588B2 (en) * | 2004-05-28 | 2008-06-03 | Hitachi Global Storage Technologies Netherlands B.V. | Read sensor having a self-pinned layer formed in both central and side regions for increased thermal stability |
US7606007B2 (en) | 2006-02-17 | 2009-10-20 | Hitachi Global Storage Technologies Netherlands B.V. | Shield stabilization for magnetoresistive sensors |
US7706108B2 (en) | 2006-02-24 | 2010-04-27 | Hitachi Global Storage Technologies Netherlands B.V. | Lead/shield structure for read head sensors |
US7974048B2 (en) | 2007-11-28 | 2011-07-05 | Tdk Corporation | Magneto-resistive effect device of CPP type having shield layers coupled with ferromagnetic layers |
US8305715B2 (en) * | 2007-12-27 | 2012-11-06 | HGST Netherlands, B.V. | Magnetoresistance (MR) read elements having an active shield |
US8514524B2 (en) | 2008-05-09 | 2013-08-20 | Headway Technologies, Inc. | Stabilized shields for magnetic recording heads |
US7961438B2 (en) | 2008-05-28 | 2011-06-14 | Tdk Corporation | Magnetoresistive device of the CPP type, and magnetic disk system |
US8477461B2 (en) | 2008-07-29 | 2013-07-02 | Tdk Corporation | Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layers |
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 |
US20100067148A1 (en) | 2008-09-16 | 2010-03-18 | Tdk Corporation | Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layers |
US20100149689A1 (en) | 2008-12-11 | 2010-06-17 | Tdk Corporation | Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layer including amorphous layer |
US8369048B2 (en) * | 2009-08-31 | 2013-02-05 | Tdk Corporation | CPP-type thin film magnetic head provided with side shields including a pair of antimagnetically exchanged-coupled side shield magnetic layers |
US8225489B2 (en) * | 2010-03-26 | 2012-07-24 | Tdk Corporation | Method of manufacturing magnetoresistive element having a pair of free layers |
US8089734B2 (en) * | 2010-05-17 | 2012-01-03 | Tdk Corporation | Magnetoresistive element having a pair of side shields |
US8514525B2 (en) | 2010-09-13 | 2013-08-20 | HGST Netherlands B.V. | Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor with reference layer integrated in magnetic shield |
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 |
US8451567B2 (en) * | 2010-12-13 | 2013-05-28 | Headway Technologies, Inc. | High resolution magnetic read head using top exchange biasing and/or lateral hand biasing of the free layer |
US20120250189A1 (en) * | 2011-03-29 | 2012-10-04 | Tdk Corporation | Magnetic head including side shield layers on both sides of a mr element |
US8630068B1 (en) * | 2011-11-15 | 2014-01-14 | Western Digital (Fremont), Llc | Method and system for providing a side shielded read transducer |
-
2013
- 2013-06-28 US US13/930,150 patent/US9251815B2/en active Active
-
2014
- 2014-06-24 JP JP2014128967A patent/JP2015011751A/ja active Pending
- 2014-06-24 KR KR1020140077418A patent/KR101662604B1/ko active IP Right Grant
- 2014-06-26 CN CN201410294225.2A patent/CN104252867B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010086648A (ja) * | 2008-09-29 | 2010-04-15 | Tdk Corp | 一対のシールド層に結合する一対の自由層を有する磁気抵抗効果素子 |
JP2012533141A (ja) * | 2009-07-08 | 2012-12-20 | シーゲイト テクノロジー エルエルシー | 複合磁気シールドを有する磁気センサ |
JP2013008439A (ja) * | 2011-06-23 | 2013-01-10 | Seagate Technology Llc | センサ積層体、シールド、および第1のシールド安定化構造を備える装置、センサ積層体、シールド、および磁性層を備える装置、データ記憶媒体、記録ヘッド、およびアームを備える装置、ならびに、センサ構造を設け、これをアニールするステップを備える方法 |
Also Published As
Publication number | Publication date |
---|---|
CN104252867A (zh) | 2014-12-31 |
US20150002962A1 (en) | 2015-01-01 |
CN104252867B (zh) | 2017-12-01 |
KR101662604B1 (ko) | 2016-10-06 |
US9251815B2 (en) | 2016-02-02 |
KR20150002487A (ko) | 2015-01-07 |
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