JP6023158B2 - 磁気抵抗性センサシールド - Google Patents
磁気抵抗性センサシールド Download PDFInfo
- Publication number
- JP6023158B2 JP6023158B2 JP2014250715A JP2014250715A JP6023158B2 JP 6023158 B2 JP6023158 B2 JP 6023158B2 JP 2014250715 A JP2014250715 A JP 2014250715A JP 2014250715 A JP2014250715 A JP 2014250715A JP 6023158 B2 JP6023158 B2 JP 6023158B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- sensor
- contact
- amorphous alloy
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005291 magnetic effect Effects 0.000 claims description 60
- 230000005294 ferromagnetic effect Effects 0.000 claims description 36
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims description 27
- 230000008878 coupling Effects 0.000 claims description 27
- 238000010168 coupling process Methods 0.000 claims description 27
- 238000005859 coupling reaction Methods 0.000 claims description 27
- 230000005290 antiferromagnetic effect Effects 0.000 claims description 25
- 125000006850 spacer group Chemical group 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 239000003302 ferromagnetic material Substances 0.000 claims description 13
- 239000011819 refractory material Substances 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 6
- 239000010955 niobium Substances 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 102100026827 Protein associated with UVRAG as autophagy enhancer Human genes 0.000 claims 1
- 101710102978 Protein associated with UVRAG as autophagy enhancer Proteins 0.000 claims 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 15
- 230000005415 magnetization Effects 0.000 description 14
- 239000000696 magnetic material Substances 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 6
- 229910003321 CoFe Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000002178 crystalline material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910003271 Ni-Fe Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005303 antiferromagnetism Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
-
- 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
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/007—Environmental aspects, e.g. temperature variations, radiation, stray fields
-
- 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
-
- 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
- G01R33/025—Compensating stray fields
-
- 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
-
- 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
-
- 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
- G11B5/3916—Arrangements in which the active read-out elements are coupled to the magnetic flux of the track by at least one magnetic thin film flux guide
-
- 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
- G12—INSTRUMENT DETAILS
- G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
- G12B17/00—Screening
- G12B17/02—Screening from electric or magnetic fields, e.g. radio waves
-
- 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
- H01F10/3204—Exchange coupling of amorphous multilayers
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/10—Magnetoresistive devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N50/00—Galvanomagnetic devices
- H10N50/80—Constructional details
- H10N50/85—Magnetic active materials
-
- 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
-
- 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
- Y10T428/1107—Magnetoresistive
- Y10T428/1121—Multilayer
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Magnetic Heads (AREA)
- Hall/Mr Elements (AREA)
- Thin Magnetic Films (AREA)
Description
Claims (20)
- 磁気抵抗性(MR)センサであって、
側面シールド要素に磁気的に結合される、合成反強磁性(SAF)構造と、
強磁性材料および高融点材料を含む第1のアモルファス合金層と、
前記第1のアモルファス合金層と接触する結晶強磁性層と、
を備える、MRセンサ。 - 前記結晶強磁性層は、前記第1のアモルファス合金層と接触する第1の表面および第2のアモルファス合金層と接触する第2の表面を有する、請求項1に記載のMRセンサ。
- 前記第1のアモルファス合金層は、前記結晶強磁性層の厚さの半分未満の厚さを有する、請求項2に記載のMRセンサ。
- 前記高融点材料は、タンタル、ニオブ、ハフニウム、およびジルコニウムから成る群から選択される、請求項1に記載のMRセンサ。
- 前記SAF構造は、シールド要素とセンサスタックの前縁との間に含まれる、請求項1に記載のMRセンサ。
- 前記SAF構造は、シールド要素とセンサスタックの後縁との間に含まれる、請求項1に記載のMRセンサ。
- 前記第1のアモルファス合金層は、スペーサ結合層と接触する、請求項1に記載のMRセンサ。
- 前記第1のアモルファス合金層は、別のアモルファス合金層に反強磁性的に結合される、請求項1に記載のMRセンサ。
- 前記第1のアモルファス合金層は、反強磁性(AFM)層と接触する、請求項1に記載のMRセンサ。
- 前記第1のアモルファス合金層は、30パーセント未満の高融点材料を含む、請求項1に記載のMRセンサ。
- 磁気抵抗性(MR)センサであって、
強磁性材料および高融点材料を含むアモルファス合金層と、前記アモルファス合金層と接触する第1の結晶強磁性層と、前記第1の結晶強磁性層に接触するスペーサ結合層とを含む、合成反強磁性(SAF)構造を備え、
前記SAF構造は、前記MRセンサの側面シールドに磁気的に結合される、MRセンサ。 - 前記高融点材料は、タンタル、ニオブ、ハフニウム、およびジルコニウムの群から選択される、請求項11に記載のMRセンサ。
- 前記SAF構造は、MRセンサの後縁に隣接するシールドから磁気的に減結合される、請求項11に記載のMRセンサ。
- 前記スペーサ結合層は、前記第1の結晶強磁性層と接触する第1の表面および第2の結晶強磁性層と接触する第2の表面を有する、請求項11に記載のMRセンサ。
- 前記SAF構造は、シールド要素とセンサスタックの前縁との間に含まれる、請求項11に記載のMRセンサ。
- 前記SAF構造は、シールド要素とセンサスタックの後縁との間に含まれる、請求項11に記載のMRセンサ。
- 磁性結晶材料と磁性アモルファス材料との交互の層を含む、ピン止め層と、
磁性結晶材料と磁性アモルファス材料との交互の層を含む、参照層と、
前記ピン止め層と前記参照層との間のスペーサ結合層とを備え、
前記スペーサ結合層は、前記ピン止め層の前記磁性結晶材料と接触する第1の表面と、前記参照層の前記磁性結晶材料と接触する第2の表面とを有する、SAF構造。 - 前記SAF構造は、シールド要素とセンサスタックの後縁との間に含まれる、請求項17に記載のSAF構造。
- 前記結晶強磁性層は、スペーサ結合層に接触する、請求項1に記載のMRセンサ。
- 前記結晶強磁性層は、反強磁性(AFM)層に接触する、請求項1に記載のMRセンサ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/105,922 | 2013-12-13 | ||
US14/105,922 US9230575B2 (en) | 2013-12-13 | 2013-12-13 | Magnetoresistive sensor with SAF structure having crystalline layer and amorphous layer |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015115088A JP2015115088A (ja) | 2015-06-22 |
JP6023158B2 true JP6023158B2 (ja) | 2016-11-09 |
Family
ID=53369261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014250715A Expired - Fee Related JP6023158B2 (ja) | 2013-12-13 | 2014-12-11 | 磁気抵抗性センサシールド |
Country Status (4)
Country | Link |
---|---|
US (2) | US9230575B2 (ja) |
JP (1) | JP6023158B2 (ja) |
KR (1) | KR101689644B1 (ja) |
CN (1) | CN104715765B (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9121886B2 (en) * | 2013-09-25 | 2015-09-01 | Seagate Technology Llc | Magnetoresistive sensor including an amorphous insertion layer excluding glass former elements |
JP6448282B2 (ja) * | 2014-10-01 | 2019-01-09 | 株式会社東芝 | 磁気ヘッド、磁気ヘッドアセンブリ、磁気記録再生装置、および磁気ヘッドの製造方法 |
US10074387B1 (en) * | 2014-12-21 | 2018-09-11 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having symmetric antiferromagnetically coupled shields |
US20160365104A1 (en) | 2015-06-15 | 2016-12-15 | Seagate Technology Llc | Magnetoresistive sensor fabrication |
US9536549B1 (en) * | 2015-08-14 | 2017-01-03 | Seagate Technology Llc | Multiple sensor magnetic reproducing device with reduced inter-sensor spacing |
US9666214B1 (en) | 2015-09-23 | 2017-05-30 | Western Digital (Fremont), Llc | Free layer magnetic reader that may have a reduced shield-to-shield spacing |
US9870791B1 (en) * | 2016-04-15 | 2018-01-16 | Seagate Technology Llc | Stabilization of one or more upper sensors in multi-sensor readers |
US9940956B1 (en) * | 2016-06-30 | 2018-04-10 | Western Digital (Fremont), Llc | Apparatus and method for reducing corrosion in capping layer of magnetic recording reader |
US9947347B1 (en) * | 2016-12-20 | 2018-04-17 | Western Digital Technologies, Inc. | Magnetic sensor using inverse spin hall effect |
JP7127545B2 (ja) * | 2017-01-05 | 2022-08-30 | Tdk株式会社 | 電磁アクチュエータ |
US10720570B2 (en) * | 2017-06-12 | 2020-07-21 | Western Digital Technologies, Inc. | Magnetic sensor using spin hall effect |
EP3442042B1 (en) * | 2017-08-10 | 2020-12-09 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Synthetic antiferromagnetic layer, magnetic tunnel junction and spintronic device using said synthetic antiferromagnetic layer |
US10522173B1 (en) * | 2018-06-13 | 2019-12-31 | Headway Technologies, Inc. | Magnetic read head structure with improved bottom shield design for better reader performance |
US10614838B2 (en) | 2018-08-23 | 2020-04-07 | Seagate Technology Llc | Reader with side shields decoupled from a top shield |
US11074930B1 (en) * | 2020-05-11 | 2021-07-27 | International Business Machines Corporation | Read transducer structure having an embedded wear layer between thin and thick shield portions |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07210822A (ja) * | 1994-01-21 | 1995-08-11 | Sanyo Electric Co Ltd | 磁気ヘッド |
JP3286263B2 (ja) * | 1999-05-11 | 2002-05-27 | アルプス電気株式会社 | 薄膜磁気ヘッド |
US6356419B1 (en) * | 1999-07-23 | 2002-03-12 | International Business Machines Corporation | Antiparallel pinned read sensor with improved magnetresistance |
JP3600545B2 (ja) | 2001-04-02 | 2004-12-15 | アルプス電気株式会社 | 薄膜磁気ヘッド |
JP5077802B2 (ja) | 2005-02-16 | 2012-11-21 | 日本電気株式会社 | 積層強磁性構造体、及び、mtj素子 |
US8270125B2 (en) | 2007-12-18 | 2012-09-18 | Hitachi Global Storage Technologies Netherlands B.V. | Tunnel junction magnetoresistive sensor having a near zero magnetostriction free layer |
US8514524B2 (en) | 2008-05-09 | 2013-08-20 | Headway Technologies, Inc. | Stabilized shields for magnetic recording heads |
US8125746B2 (en) * | 2009-07-13 | 2012-02-28 | Seagate Technology Llc | Magnetic sensor with perpendicular anisotrophy free layer and side shields |
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 |
US8711525B2 (en) * | 2011-05-06 | 2014-04-29 | Seagate Technology Llc | Magnetoresistive shield with coupled lateral magnet bias |
US20120327537A1 (en) * | 2011-06-23 | 2012-12-27 | Seagate Technology Llc | Shield Stabilization Configuration With Applied Bias |
US8817426B2 (en) | 2011-10-17 | 2014-08-26 | HGST Netherlands B.V. | Magnetic sensor having CoFeBTa in pinned and free layer structures |
US8531801B1 (en) | 2012-12-20 | 2013-09-10 | Western Digital (Fremont), Llc | Method and system for providing a read transducer having a composite magnetic shield with smooth interfaces |
US8638530B1 (en) * | 2013-02-20 | 2014-01-28 | HGST Netherlands B.V. | Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor having a top shield with an antiparallel structure |
US8913349B2 (en) * | 2013-03-29 | 2014-12-16 | Tdk Corporation | CPP-type magnetoresistance effect element and magnetic disk device using side shield layers |
-
2013
- 2013-12-13 US US14/105,922 patent/US9230575B2/en active Active
-
2014
- 2014-12-09 KR KR1020140176174A patent/KR101689644B1/ko active IP Right Grant
- 2014-12-11 JP JP2014250715A patent/JP6023158B2/ja not_active Expired - Fee Related
- 2014-12-12 CN CN201410767077.1A patent/CN104715765B/zh active Active
-
2015
- 2015-12-08 US US14/962,950 patent/US9704517B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2015115088A (ja) | 2015-06-22 |
US9230575B2 (en) | 2016-01-05 |
CN104715765B (zh) | 2019-06-18 |
US20150170686A1 (en) | 2015-06-18 |
KR20150069527A (ko) | 2015-06-23 |
US20160093319A1 (en) | 2016-03-31 |
KR101689644B1 (ko) | 2016-12-26 |
CN104715765A (zh) | 2015-06-17 |
US9704517B2 (en) | 2017-07-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6023158B2 (ja) | 磁気抵抗性センサシールド | |
US8873204B1 (en) | Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor structure with multiple stacked sensors and center shield with CoFeB insertion layer | |
US8638530B1 (en) | Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor having a top shield with an antiparallel structure | |
US9177575B1 (en) | Tunneling magnetoresistive (TMR) read head with reduced gap thickness | |
US9001472B2 (en) | Shield stabilization configuration with applied bias | |
US9019664B2 (en) | Magnetoresistive sensor with variable shield permeability | |
JP4794109B2 (ja) | スピンバルブ型磁気抵抗効果再生ヘッドおよびその製造方法 | |
JP6069265B2 (ja) | 磁気抵抗性センサシールド | |
US9646635B2 (en) | Magnetoresistive sensor | |
US7872837B2 (en) | Method and apparatus for providing a magnetic read sensor having a thin pinning layer and improved magnetoreistive coefficient | |
JP2009026400A (ja) | 差動磁気抵抗効果型磁気ヘッド | |
US7821747B2 (en) | Method and apparatus for providing improved pinning structure for tunneling magnetoresistive sensor | |
JP5448438B2 (ja) | 磁気リード・ヘッド | |
US9368136B2 (en) | Magnetoresistive sensor having synthetic antiferromagnetic layer in top and bottom shields | |
JP2015015068A (ja) | 結晶性CoFeX層およびホイスラー型合金層を含む、多重層からなる基準層を含む平面垂直通電型(CPP)磁気抵抗センサ | |
JP2017004586A (ja) | 磁気抵抗センサ製造 | |
US20150213815A1 (en) | Synthetic antiferromagnetic reader | |
US7268986B2 (en) | Double tunnel junction using self-pinned center ferromagnet | |
US10249329B1 (en) | Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor with wedge shaped free layer | |
JP4160945B2 (ja) | 磁気抵抗効果素子、薄膜磁気ヘッド、ヘッドジンバルアセンブリ、およびハードディスク装置 | |
JP2008243920A (ja) | 磁気抵抗効果再生素子、磁気ヘッド、および磁気再生装置 | |
US20150116868A1 (en) | Layered synthetic anti-ferromagnetic upper shield | |
CN105989857B (zh) | 合成反铁磁读取器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20151028 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20151110 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20160209 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20160309 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20160405 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20160906 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20161006 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6023158 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
LAPS | Cancellation because of no payment of annual fees |