JP2014010881A - 装置、磁気素子、およびセンサ - Google Patents
装置、磁気素子、およびセンサ Download PDFInfo
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- JP2014010881A JP2014010881A JP2013122657A JP2013122657A JP2014010881A JP 2014010881 A JP2014010881 A JP 2014010881A JP 2013122657 A JP2013122657 A JP 2013122657A JP 2013122657 A JP2013122657 A JP 2013122657A JP 2014010881 A JP2014010881 A JP 2014010881A
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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
- G11B5/3929—Disposition of magnetic thin films not used for directly coupling magnetic flux from the track to the MR film or for shielding
- G11B5/3932—Magnetic biasing films
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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
- G11B5/62—Record carriers characterised by the selection of the material
-
- 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
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
- G11B21/20—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier
- G11B21/21—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier with provision for maintaining desired spacing of head from record carrier, e.g. fluid-dynamic spacing, slider
-
- 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
- G11B5/58—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 with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/11—Magnetic recording head
- Y10T428/1193—Magnetic recording head with interlaminar component [e.g., adhesion layer, etc.]
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
- Hall/Mr Elements (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
【解決手段】装置は、概して、空気軸受面(ABS)に位置付けられた磁気自由層を有する磁気積層体に向けられ得る。磁気自由層は、当該磁気自由層に結合され、かつABSから遠位な位置に位置付けられるバイアス構造によって、さまざまな実施例において予め定められた磁化にバイアスされ得る。
【選択図】図3A
Description
磁気素子は、空気軸受面(ABS)に位置付けられた磁気自由層を有する磁気積層体として構築され得る。さまざまな実施例は、磁気自由層に結合され、かつ遠位ABSに位置付けられるバイアス構造によって、予め定められた磁化に磁気自由層をバイアスできる。
より高いデータ容量およびより高速な転送速度を有するデータ記憶装置がますます重要になってきている。そのようにデータ記憶特性を増大するためには、データ変換素子およびデータ媒体のトラックのように、データアクセス素子のサイズの縮小が必要となり得る。しかしながら、磁気素子のシールド間の間隔を縮小することは、データリーダの幅および長さなどのプロセスおよび設計変数に対する感度を増加させる、というような多数の動作および構成の問題をもたらし得る。3層磁気積層体のようなデータ読出素子は、設計およびプロセス変動に対する感度が過剰にならないようにするが、設計およびプロセス感度と同様に、信頼性のある磁気的および熱的安定性を有する磁気素子の形状因子を減少するためには困難性がある。したがって、産業界においてデータアクセス素子の減少された形状因子の進展に対する需要が高まっている。
Claims (20)
- 空気軸受面(ABS)に位置付けられ、バイアス構造によって予め定められた磁化にバイアスされた磁気自由層を有する磁気積層体を備え、
前記バイアス構造は、前記磁気自由層に結合され、かつ前記ABSから遠位な位置に位置付けられている、装置。 - 前記バイアス構造は、交互の磁気層および非磁気層の積層体を備える、請求項1に記載の装置。
- 磁気層の各々は、強磁性材料であり、
前記磁気層のうちの1つの磁気層は、前記自由層に接触する、請求項2に記載の装置。 - 絶縁層は、磁気層および非磁気層を磁気シールドの遷移面から分離する、請求項2に記載の装置。
- 前記バイアス構造は、前記磁気積層体に隣接する磁気シールドの遷移領域に位置付けられており、
前記遷移領域は、前記ABSから遠位の位置にある厚さの減少を規定する、請求項1に記載の装置。 - 前記バイアス構造は、予め定められた粗さで構築されるシード層と、前記自由層に接触している強磁性層との積層体を備える、請求項1に記載の装置。
- 前記予め定められた粗さは、斜めスパッタリング蒸着で形成されている、請求項6に記載の装置。
- 前記予め定められた粗さは、前記強磁性層についての同一面の異方性を増大させる、請求項6に記載の装置。
- 前記バイアス構造は、固定磁化方向を有する固定層と、前記自由層に接触する強磁性層との積層体を備える、請求項1に記載の装置。
- 前記固定層は、反強磁性材料である、請求項9に記載の装置。
- 前記固定層は、永久磁石である、請求項9に記載の装置。
- 前記バイアス構造は、異なるストライプ高さを有する層を有する積層体である、請求項1に記載の装置。
- 前記自由層に接触する前記バイアス構造の一部は、予め定められた磁気トルクを生成するために、前記自由層の積層面内異方性を補完するバイアス面内異方性を有する、請求項1に記載の装置。
- 空気軸受面(ABS)に各々位置付けられ、かつ第1および第2のバイアス構造のそれぞれによって予め定められた磁化にバイアスされた、第1および第2の磁気自由層を有する磁気積層体を備え、
各々のバイアス構造は、前記第1および第2の磁気自由層にそれぞれ結合され、前記ABSから遠位な位置に位置付けられている、磁気素子。 - 前記第1および第2のバイアス構造は、それぞれ、前記ABS上の前記磁気積層体をはさんで向かい合わせにある頂部磁気シールドおよび底部磁気シールドの遷移領域に位置付けられ、
前記遷移領域の各々は、前記ABSから遠位な位置の磁気シールド厚さの減少を規定する、請求項14に記載の磁気素子。 - 前記第1および第2のバイアス構造は、異なる層材料の積層体として構成されている、請求項14に記載の磁気素子。
- 前記第1および第2のバイアス構造は、共通の層材料の積層体として構成されている、請求項14に記載の磁気素子。
- 空気軸受面(ABS)に位置付けられ、かつバイアス構造および後部バイアス磁石によって共に予め定められた磁化にバイアスされた磁気自由層を有する磁気積層体を備え、
前記バイアス構造および前記後部バイアス磁石の各々は、前記ABSから凹んだ位置にあり、
前記バイアス構造は、前記ABSから遠位な位置にある前記磁気自由層に結合され、
前記後部バイアス磁石は、前記ABSから遠位な位置にある前記磁気積層体から分離されている、センサ。 - 第1および第2のバイアス構造の各々は、前記ABSから遠位な位置で減少する可変厚さを有する、請求項18に記載のセンサ。
- 前記後部バイアス磁石は、前記磁気積層体の積層体厚さよりも大きいバイアス厚さを有する、請求項18に記載のセンサ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US13/538,990 | 2012-06-29 | ||
US13/538,990 US8837092B2 (en) | 2012-06-29 | 2012-06-29 | Magnetic element with biasing structure distal the air bearing surface |
Publications (2)
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JP2014010881A true JP2014010881A (ja) | 2014-01-20 |
JP5714057B2 JP5714057B2 (ja) | 2015-05-07 |
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JP2013122657A Expired - Fee Related JP5714057B2 (ja) | 2012-06-29 | 2013-06-11 | 装置、磁気素子、およびセンサ |
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US (2) | US8837092B2 (ja) |
EP (1) | EP2680267A3 (ja) |
JP (1) | JP5714057B2 (ja) |
KR (1) | KR101496141B1 (ja) |
CN (1) | CN103514890B (ja) |
Cited By (1)
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KR101823489B1 (ko) | 2013-08-23 | 2018-03-14 | 시게이트 테크놀로지 엘엘씨 | 리더 구조 |
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2013
- 2013-05-01 EP EP13166115.9A patent/EP2680267A3/en not_active Withdrawn
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- 2013-06-11 JP JP2013122657A patent/JP5714057B2/ja not_active Expired - Fee Related
- 2013-06-27 KR KR20130074525A patent/KR101496141B1/ko active IP Right Grant
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KR101823489B1 (ko) | 2013-08-23 | 2018-03-14 | 시게이트 테크놀로지 엘엘씨 | 리더 구조 |
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CN103514890A (zh) | 2014-01-15 |
EP2680267A3 (en) | 2014-01-08 |
KR20140002531A (ko) | 2014-01-08 |
KR101496141B1 (ko) | 2015-02-27 |
EP2680267A2 (en) | 2014-01-01 |
US8837092B2 (en) | 2014-09-16 |
JP5714057B2 (ja) | 2015-05-07 |
US20140004386A1 (en) | 2014-01-02 |
US9001474B2 (en) | 2015-04-07 |
US20140340792A1 (en) | 2014-11-20 |
CN103514890B (zh) | 2017-08-15 |
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