JP5710455B2 - 装置および磁気素子 - Google Patents
装置および磁気素子 Download PDFInfo
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- JP5710455B2 JP5710455B2 JP2011260601A JP2011260601A JP5710455B2 JP 5710455 B2 JP5710455 B2 JP 5710455B2 JP 2011260601 A JP2011260601 A JP 2011260601A JP 2011260601 A JP2011260601 A JP 2011260601A JP 5710455 B2 JP5710455 B2 JP 5710455B2
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- 230000005291 magnetic effect Effects 0.000 title claims description 118
- 230000005290 antiferromagnetic effect Effects 0.000 claims description 115
- 125000006850 spacer group Chemical group 0.000 claims description 29
- 230000005294 ferromagnetic effect Effects 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 13
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- 238000003780 insertion Methods 0.000 claims description 9
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- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910003266 NiCo Inorganic materials 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
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
- G11B5/62—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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Hall/Mr Elements (AREA)
- Mram Or Spin Memory Techniques (AREA)
- Magnetic Heads (AREA)
Description
この発明のさまざまな実施例は一般に、磁気状態の変化を検出可能な磁気素子に向けられている。
この開示は一般に、データ変換ヘッドにおいて使用される読取センサ、およびデータの不揮発性記憶を提供するために使用される磁気メモリ素子といった状況で、磁気揺動を検出可能な磁気素子に関する。電子機器がより高性能になるにつれて、データ容量の増大およびデータ転送速度の改良に対する要望は、データ感知素子の速度および信頼性を特に重んじてきた。データ記憶の大部分は磁気記憶の使用を通して行なわれるため、磁気揺動の変化に敏感なデータ感知素子の磁気安定化は、さらに重要な役割を担っている。
Claims (13)
- 第1の面積範囲を有し、第1および第2の強磁性フリー層間に位置付けられたスペーサ層を含む、磁気応答性スタックと、
第1のフリー層に、スペーサ層とは反対側のその表面上で結合された少なくとも1つの反強磁性(AFM)タブとを含み、AFMタブは、第1の面積範囲よりも小さい第2の面積範囲を有し、
第1の面積範囲および第2の面積範囲は、磁気応答性スタックのスタック方向から見た面積範囲であり、
AFMタブは、スタックの第1の端に隣接する空気軸受面からオフセット距離離れており、
AFMタブおよび第1の電極層の各々は、第1のフリー層に接触している、装置。 - 第2のフリー層に、スペーサ層とは反対側のその表面上で結合された第2のAFMタブをさらに含む、請求項1に記載の装置。
- スタックの選択された側に結合された少なくとも1つの磁気シールドをさらに含む、請求項1または2に記載の装置。
- 少なくとも1つの磁気シールドは、AFMタブの一部を収納する厚さ減少領域を有する、請求項3に記載の装置。
- AFMタブと磁気シールドとの間に絶縁層が配置されている、請求項3または4に記載の装置。
- AFMタブと第1の電極層とは同一平面上にあり、双方とも異なる場所で第1の強磁性フリー層に結合されている、請求項1に記載の装置。
- 第1および第2のフリー層は各々、多層構造である、請求項1〜6のいずれか1項に記載の装置。
- 第1のフリー層は、スペーサ層に結合された(Co x Fe 1-x ) y B 1-y 層と、AFMタブに結合されたCo x Fe 1-x 層と、Co x Fe 1-x 層と(Co x Fe 1-x ) y B 1-y 層との間に配置されたNi x Fe 1-x 層とを含んでおり、
第1の金属挿入層がCoxFe1-x層とNixFe1-x層との間に位置し、第2の金属挿入層がNixFe1-x層と(CoxFe1-x)yB1-y層との間に位置している、請求項1〜7のいずれか1項に記載の装置。 - 各フリー層とAFMタブとの間に合成反強磁性体が配置されている、請求項1〜8のいずれか1項に記載の装置。
- データ変換ヘッドにおける読取センサとして特徴付けられる、請求項1〜9のいずれか1項に記載の装置。
- 装置であって、
第1の面積範囲を有し、第1および第2の強磁性フリー多層構造間に位置付けられたスペーサ層を含む、磁気応答性スタックを含み、第1および第2の強磁性フリー多層構造は各々、スペーサ層に結合された(CoxFe1-x)yB1-y層と、AFMタブに結合されたCoxFe1-x層と、CoxFe1-x層と(CoxFe1-x)yB1-y層との間に配置されたNixFe1-x層とを含んでおり、前記装置はさらに、
第1のフリー層に、スペーサ層とは反対側のその表面上で結合された少なくとも1つの反強磁性(AFM)タブを含み、AFMタブは、第1の面積範囲よりも小さい第2の面積範囲を有し、
第1の面積範囲および第2の面積範囲は、磁気応答性スタックのスタック方向から見た面積範囲であり、
AFMタブは、スタックの第1の端に隣接する空気軸受面からオフセット距離離れて、第1のフリー層と接触しており、
AFMタブと第1の電極層とは同一平面上にあり、双方とも異なる場所で第1のフリー層に結合されている、装置。 - 多層構造のうちの少なくとも1つは、フリー層の磁気モーメントを弱める金属挿入層である、請求項11に記載の装置。
- 不揮発性固体メモリセルとして特徴付けられる、請求項11または12に記載の装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/956,752 US8553369B2 (en) | 2010-11-30 | 2010-11-30 | Magnetic element with improved stability and including at least one antiferromagnetic tab |
US12/956,752 | 2010-11-30 |
Publications (3)
Publication Number | Publication Date |
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JP2012119053A JP2012119053A (ja) | 2012-06-21 |
JP2012119053A5 JP2012119053A5 (ja) | 2012-09-27 |
JP5710455B2 true JP5710455B2 (ja) | 2015-04-30 |
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JP2011260601A Expired - Fee Related JP5710455B2 (ja) | 2010-11-30 | 2011-11-29 | 装置および磁気素子 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8553369B2 (ja) |
JP (1) | JP5710455B2 (ja) |
KR (1) | KR101376207B1 (ja) |
CN (1) | CN102592609B (ja) |
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-
2010
- 2010-11-30 US US12/956,752 patent/US8553369B2/en active Active
-
2011
- 2011-11-29 JP JP2011260601A patent/JP5710455B2/ja not_active Expired - Fee Related
- 2011-11-30 KR KR1020110126909A patent/KR101376207B1/ko active IP Right Grant
- 2011-11-30 CN CN201110463134.3A patent/CN102592609B/zh not_active Expired - Fee Related
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Publication number | Publication date |
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CN102592609B (zh) | 2015-12-02 |
KR20120059433A (ko) | 2012-06-08 |
CN102592609A (zh) | 2012-07-18 |
US8553369B2 (en) | 2013-10-08 |
KR101376207B1 (ko) | 2014-03-21 |
US20120134057A1 (en) | 2012-05-31 |
JP2012119053A (ja) | 2012-06-21 |
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