JP5448438B2 - 磁気リード・ヘッド - Google Patents
磁気リード・ヘッド Download PDFInfo
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- JP5448438B2 JP5448438B2 JP2008323473A JP2008323473A JP5448438B2 JP 5448438 B2 JP5448438 B2 JP 5448438B2 JP 2008323473 A JP2008323473 A JP 2008323473A JP 2008323473 A JP2008323473 A JP 2008323473A JP 5448438 B2 JP5448438 B2 JP 5448438B2
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- read head
- based amorphous
- amorphous metal
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- 230000005291 magnetic effect Effects 0.000 title claims description 108
- 239000010410 layer Substances 0.000 claims description 323
- 229910001291 heusler alloy Inorganic materials 0.000 claims description 61
- 239000005300 metallic glass Substances 0.000 claims description 48
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 229910045601 alloy Inorganic materials 0.000 claims description 21
- 239000000956 alloy Substances 0.000 claims description 21
- 239000013078 crystal Substances 0.000 claims description 19
- 230000005415 magnetization Effects 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 13
- 229910052796 boron Inorganic materials 0.000 claims description 8
- 229910052735 hafnium Inorganic materials 0.000 claims description 8
- 229910052758 niobium Inorganic materials 0.000 claims description 8
- 229910052715 tantalum Inorganic materials 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 229910052721 tungsten Inorganic materials 0.000 claims description 8
- 229910052726 zirconium Inorganic materials 0.000 claims description 8
- 229910020598 Co Fe Inorganic materials 0.000 claims description 3
- 229910002519 Co-Fe Inorganic materials 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims 1
- 239000010408 film Substances 0.000 description 38
- 230000005290 antiferromagnetic effect Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 10
- 241001364096 Pachycephalidae Species 0.000 description 9
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 239000010409 thin film Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000005294 ferromagnetic effect Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000005381 magnetic domain Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 230000005330 Barkhausen effect Effects 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910019222 CoCrPt Inorganic materials 0.000 description 1
- 229910003321 CoFe Inorganic materials 0.000 description 1
- 229910018979 CoPt Inorganic materials 0.000 description 1
- 229910019041 PtMn Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002885 antiferromagnetic material Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910021480 group 4 element Inorganic materials 0.000 description 1
- 229910021478 group 5 element Inorganic materials 0.000 description 1
- 229910021476 group 6 element Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/09—Magnetoresistive devices
- G01R33/098—Magnetoresistive devices comprising tunnel junctions, e.g. tunnel magnetoresistance sensors
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
- H01F10/193—Magnetic semiconductor compounds
- H01F10/1936—Half-metallic, e.g. epitaxial CrO2 or NiMnSb films
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3268—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn
- H01F10/3281—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn only by use of asymmetry of the magnetic film pair itself, i.e. so-called pseudospin valve [PSV] structure, e.g. NiFe/Cu/Co
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3295—Spin-exchange coupled multilayers wherein the magnetic pinned or free layers are laminated without anti-parallel coupling within the pinned and free 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
- G11B5/127—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
- H01F10/16—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys containing cobalt
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3268—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn
- H01F10/3272—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn by use of anti-parallel coupled [APC] ferromagnetic layers, e.g. artificial ferrimagnets [AFI], artificial [AAF] or synthetic [SAF] anti-ferromagnets
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nanotechnology (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Hall/Mr Elements (AREA)
- Magnetic Heads (AREA)
- Thin Magnetic Films (AREA)
Description
12 ライト・ヘッド、13 保護膜、21 磁気ディスク対抗面
111 下部シールド、112 磁気抵抗センサ、113 上部シールド
114 上部磁気隔離膜、115 ハードバイアス膜、116 ハードバイアス下地膜
117 ジャンクション絶縁膜、121 薄膜コイル、122 記録磁極
123 絶縁体、211 センサ下地層、212 反強磁性層、213 固定層
214 非磁性中間層、215 自由層、216 キャップ層、311 第1固定層
312 第2固定層、511 ホイスラ合金層、512 Co系アモルファス金属層
513 金属結晶軟磁性層
Claims (9)
- 磁気抵抗センサを有し、前記磁気抵抗センサの積層方向に検知電流を流す磁気リード・ヘッドであって、前記磁気抵抗センサは、
外部磁界によって磁化方向が変化する自由層と、
前記自由層と積層されており、磁化方向が固定された固定層と、
前記自由層と前記固定層との間にある非磁性中間層とを有し、
前記自由層は、
ホイスラ合金層と、
Co系アモルファス金属層と、
金属結晶の軟磁性層と、を有し、
前記軟磁性層と前記ホイスラ合金層との間に前記Co系アモルファス金属層が形成されている、磁気リード・ヘッド。 - 前記Co系アモルファス金属層は、Ta、Ti、Zr、Nb、Hf、W、Bの少なくとも一つの元素を含む、
請求項1に記載の磁気リード・ヘッド。 - 前記Co系アモルファス金属層は、
Co−Fe−X:XはTa、Ti、Zr、Nb、Hf、W、Bの内の一つもしくは複数の元素、
である、請求項1に記載の磁気リード・ヘッド。 - 前記Co系アモルファス金属層の厚みは、前記軟磁性層及び前記ホイスラ合金層の厚みよりも一桁以上薄い、
請求項3に記載の磁気リード・ヘッド。 - 前記Co系アモルファス金属層の厚みの桁数は、前記ホイスラ合金層の厚みの桁数以上である、
請求項1に記載の磁気リード・ヘッド。 - 前記Co系アモルファス金属層は、
Co−X:XはTa、Ti、Zr、Nb、Hf、W、Bの内の一つもしくは複数の元素
である、請求項1に記載の磁気リード・ヘッド。 - 前記固定層はホイスラ合金層を含む、
請求項1に記載の磁気リード・ヘッド。 - 前記自由層は、さらに、BCC構造をもつナノ磁性層を有し、
非磁性中間層、前記ナノ磁性層、前記ホイスラ合金層の順に形成されており、前記ホイスラ合金層が前記Co系アモルファス金属層よりも前記非磁性中間層に近い位置に配置され、
前記ナノ磁性層の厚みは、前記ホイスラ合金層の厚みよりも1桁以上薄い、
請求項1に記載の磁気リード・ヘッド。 - 前記ナノ磁性層がCo−Fe合金で、Fe組成が30at%以上である、
請求項8に記載の磁気リード・ヘッド。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008323473A JP5448438B2 (ja) | 2008-12-19 | 2008-12-19 | 磁気リード・ヘッド |
US12/642,269 US8064159B2 (en) | 2008-12-19 | 2009-12-18 | Current perpendicular to plane (CPP) magnetic read head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008323473A JP5448438B2 (ja) | 2008-12-19 | 2008-12-19 | 磁気リード・ヘッド |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2010146650A JP2010146650A (ja) | 2010-07-01 |
JP2010146650A5 JP2010146650A5 (ja) | 2012-01-12 |
JP5448438B2 true JP5448438B2 (ja) | 2014-03-19 |
Family
ID=42265684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008323473A Expired - Fee Related JP5448438B2 (ja) | 2008-12-19 | 2008-12-19 | 磁気リード・ヘッド |
Country Status (2)
Country | Link |
---|---|
US (1) | US8064159B2 (ja) |
JP (1) | JP5448438B2 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5661995B2 (ja) * | 2008-12-15 | 2015-01-28 | エイチジーエスティーネザーランドビーブイ | 磁気抵抗効果型磁気ヘッド |
JP6419825B2 (ja) * | 2014-08-01 | 2018-11-07 | 国立研究開発法人物質・材料研究機構 | 磁気抵抗素子、当該磁気抵抗素子を用いた磁気ヘッド及び磁気再生装置 |
JP6702034B2 (ja) * | 2016-07-04 | 2020-05-27 | 株式会社デンソー | 磁気センサ |
US10566015B2 (en) | 2016-12-12 | 2020-02-18 | Western Digital Technologies, Inc. | Spin transfer torque (STT) device with template layer for heusler alloy magnetic layers |
KR102567512B1 (ko) | 2019-02-01 | 2023-08-14 | 삼성전자주식회사 | 자기 터널 접합 소자 및 그를 포함하는 자기 메모리 장치 |
US10867625B1 (en) | 2019-03-28 | 2020-12-15 | Western Digital Technologies, Inc | Spin transfer torque (STT) device with template layer for Heusler alloy magnetic layers |
US11730063B2 (en) | 2019-12-17 | 2023-08-15 | Tdk Corporation | Magnetoresistive effect element including a Heusler alloy layer with a crystal region and an amorphous region |
CN113036032B (zh) * | 2019-12-24 | 2024-08-27 | Tdk株式会社 | 磁阻效应元件 |
JP7435057B2 (ja) * | 2020-03-10 | 2024-02-21 | Tdk株式会社 | 磁気抵抗効果素子 |
US11528038B2 (en) | 2020-11-06 | 2022-12-13 | Western Digital Technologies, Inc. | Content aware decoding using shared data statistics |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5991125A (en) * | 1994-09-16 | 1999-11-23 | Kabushiki Kaisha Toshiba | Magnetic head |
JP2003298139A (ja) * | 2002-03-29 | 2003-10-17 | Alps Electric Co Ltd | 磁気検出素子 |
JP2005019484A (ja) | 2003-06-24 | 2005-01-20 | Hitachi Ltd | 磁気抵抗効果素子及び磁気ヘッド |
JP4406242B2 (ja) * | 2003-09-04 | 2010-01-27 | 株式会社東芝 | 磁気メモリ |
US8177955B2 (en) * | 2004-06-03 | 2012-05-15 | Headway Technologies, Inc. | Electrodeposition of FeCoNiV films with high resistivity and high saturation magnetization for magnetic head fabrication |
JP4674498B2 (ja) * | 2004-09-03 | 2011-04-20 | Tdk株式会社 | 磁気検出素子 |
JP4544037B2 (ja) * | 2005-05-31 | 2010-09-15 | Tdk株式会社 | 磁気検出素子及びその製造方法 |
US20070087227A1 (en) * | 2005-10-14 | 2007-04-19 | Seagate Technology Llc | Granular magnetic recording media with improved corrosion resistance by cap layer + pre-covercoat etching |
JP2007317824A (ja) * | 2006-05-25 | 2007-12-06 | Tdk Corp | 磁気抵抗効果素子およびその製造方法、ならびに薄膜磁気ヘッド、ヘッドジンバルアセンブリ、ヘッドアームアセンブリおよび磁気ディスク装置 |
JP4384137B2 (ja) | 2006-06-14 | 2009-12-16 | Tdk株式会社 | Cpp−gmrヘッド用の磁界検出素子の製造方法、cpp−gmrヘッド用の磁界検出素子、積層体、ウエハ、ヘッドジンバルアセンブリ、およびハードディスク装置 |
US7760475B2 (en) | 2007-03-12 | 2010-07-20 | Tdk Corporation | Magneto-resistance effect element having free layer including magnetostriction reduction layer and thin-film magnetic head |
JP2008277586A (ja) | 2007-04-27 | 2008-11-13 | Toshiba Corp | 磁気素子、磁気記録ヘッド及び磁気記録装置 |
-
2008
- 2008-12-19 JP JP2008323473A patent/JP5448438B2/ja not_active Expired - Fee Related
-
2009
- 2009-12-18 US US12/642,269 patent/US8064159B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US8064159B2 (en) | 2011-11-22 |
US20100157465A1 (en) | 2010-06-24 |
JP2010146650A (ja) | 2010-07-01 |
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