DE3229774C2 - Magnetoresistives Bauelement - Google Patents
Magnetoresistives BauelementInfo
- Publication number
- DE3229774C2 DE3229774C2 DE3229774A DE3229774A DE3229774C2 DE 3229774 C2 DE3229774 C2 DE 3229774C2 DE 3229774 A DE3229774 A DE 3229774A DE 3229774 A DE3229774 A DE 3229774A DE 3229774 C2 DE3229774 C2 DE 3229774C2
- Authority
- DE
- Germany
- Prior art keywords
- magnetoresistive
- pattern
- layer
- component
- magnetic field
- 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
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 143
- 230000005415 magnetization Effects 0.000 claims abstract description 57
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 239000003302 ferromagnetic material Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 7
- 230000035945 sensitivity Effects 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 101100346656 Drosophila melanogaster strat gene Proteins 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 13
- 230000005330 Barkhausen effect Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 4
- 230000001788 irregular Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 89
- 230000000694 effects Effects 0.000 description 10
- 230000005347 demagnetization Effects 0.000 description 7
- 229920002120 photoresistant polymer Polymers 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000000992 sputter etching Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy 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
- 244000309464 bull Species 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
- 229910001845 yogo sapphire 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
- G11B5/127—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Hall/Mr Elements (AREA)
- Magnetic Heads (AREA)
- Measuring Magnetic Variables (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56124005A JPS5827386A (ja) | 1981-08-10 | 1981-08-10 | 磁気抵抗効果素子 |
| JP56198387A JPS58100473A (ja) | 1981-12-11 | 1981-12-11 | 磁気抵抗効果素子 |
| JP56198388A JPS58100474A (ja) | 1981-12-11 | 1981-12-11 | 磁気抵抗効果素子 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3229774A1 DE3229774A1 (de) | 1983-03-24 |
| DE3229774C2 true DE3229774C2 (de) | 1987-05-07 |
Family
ID=27314845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3229774A Expired DE3229774C2 (de) | 1981-08-10 | 1982-08-10 | Magnetoresistives Bauelement |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4477794A (US20020125480A1-20020912-P00900.png) |
| DE (1) | DE3229774C2 (US20020125480A1-20020912-P00900.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4120984A1 (de) * | 1990-06-26 | 1992-01-09 | Mazda Motor | Sensor mit einem magnetfilm und verfahren zu dessen herstellung |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5845619A (ja) * | 1981-09-09 | 1983-03-16 | Hitachi Ltd | 磁気抵抗効果型薄膜磁気ヘッド |
| EP0081240B1 (en) * | 1981-12-09 | 1989-06-28 | Matsushita Electric Industrial Co., Ltd. | Thin film magnetic head |
| JPS58166527A (ja) * | 1982-03-29 | 1983-10-01 | Nec Corp | 磁気抵抗効果ヘツド |
| DE3374622D1 (en) * | 1982-04-14 | 1987-12-23 | Matsushita Electric Ind Co Ltd | A playback head for perpendicular magnetic recordings |
| US4663683A (en) * | 1982-11-11 | 1987-05-05 | Matsushita Electric Industrial Co., Ltd. | Magnetoresistive thin film head |
| US4566050A (en) * | 1982-12-30 | 1986-01-21 | International Business Machines Corp. (Ibm) | Skew insensitive magnetic read head |
| US4644430A (en) * | 1984-08-27 | 1987-02-17 | Eastman Kodak Company | Slotted sensor in yoke-type magneto-resistive head |
| GB2169434B (en) * | 1984-11-24 | 1989-09-20 | Magnetic Components Limited | Magnetoresistive sensors |
| JPS61178713A (ja) * | 1985-02-05 | 1986-08-11 | Victor Co Of Japan Ltd | 薄膜磁気センサ |
| US4649447A (en) * | 1985-08-15 | 1987-03-10 | International Business Machines | Combed MR sensor |
| JPS63202979A (ja) * | 1987-02-18 | 1988-08-22 | Alps Electric Co Ltd | エンコ−ダ用磁気センサ |
| US5001586A (en) * | 1989-08-01 | 1991-03-19 | International Business Machines Corporation | Very low noise magnetoresistive sensor for high density media applications |
| JP2572139B2 (ja) * | 1990-01-25 | 1997-01-16 | 旭化成工業株式会社 | 磁気抵抗センサー |
| DE69106334T2 (de) * | 1990-12-10 | 1995-05-04 | Hitachi Ltd | Mehrsicht Film mit magnetoresistiven Effekt und magnetoresitives Element. |
| TW243530B (en) * | 1992-12-30 | 1995-03-21 | Ibm | Magnetoresistive sensor with improved microtrack profile for improved servo-positioning precision |
| TW279977B (US20020125480A1-20020912-P00900.png) * | 1993-09-24 | 1996-07-01 | Philips Electronics Nv | |
| JPH08130337A (ja) * | 1994-09-09 | 1996-05-21 | Sanyo Electric Co Ltd | 磁気抵抗素子及びその製造方法 |
| US5818323A (en) * | 1994-09-09 | 1998-10-06 | Sanyo Electric Co., Ltd. | Magnetoresistive device |
| US5867025A (en) * | 1994-11-21 | 1999-02-02 | International Business Machines Corporation | Magnetoresistive spin valve sensor with stepped layers |
| DE19633362A1 (de) * | 1996-08-19 | 1998-02-26 | Siemens Ag | Schichtaufbau mit einem magnetisch anisotropen Schichtteil |
| WO2000026683A1 (en) * | 1998-10-30 | 2000-05-11 | Koninklijke Philips Electronics N.V. | Magnetoresistive magnetic field sensor |
| US6502757B1 (en) * | 1999-09-17 | 2003-01-07 | Dai Nippon Printing Co., Ltd. | Information recorded medium, device for reading the information, information recorded medium transfer foil, and method for producing information recorded medium |
| DE19949713C2 (de) * | 1999-10-15 | 2001-08-16 | Bosch Gmbh Robert | Magnetoresistives Schichtsystem |
| US6826021B2 (en) * | 2002-04-03 | 2004-11-30 | International Business Machines Corporation | Spin valve sensor having ultra-thin freelayers including nickel-iron, ruthenium, and a cobalt-iron nanolayer |
| JP2004014001A (ja) * | 2002-06-06 | 2004-01-15 | Fuji Photo Film Co Ltd | 磁気抵抗効果型ヘッド |
| US7139156B1 (en) | 2002-06-20 | 2006-11-21 | Storage Technology Corporation | Non-penetration of periodic structure to PM |
| US7227726B1 (en) | 2002-11-12 | 2007-06-05 | Storage Technology Corporation | Method and system for providing a dual-stripe magnetoresistive element having periodic structure stabilization |
| US7118814B1 (en) * | 2004-03-02 | 2006-10-10 | Storage Technology Corporation | Apparatus and method for step-stabilization of GMR-based read sensors |
| US7545602B1 (en) * | 2005-07-26 | 2009-06-09 | Sun Microsystems, Inc. | Use of grating structures to control asymmetry in a magnetic sensor |
| US9134386B2 (en) * | 2011-06-28 | 2015-09-15 | Oracle International Corporation | Giant magnetoresistive sensor having horizontal stabilizer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575067B2 (US20020125480A1-20020912-P00900.png) * | 1973-07-13 | 1982-01-28 | ||
| US3864751A (en) * | 1973-10-04 | 1975-02-04 | Ibm | Induced bias magnetoresistive read transducer |
| US4052748A (en) * | 1974-04-01 | 1977-10-04 | U.S. Philips Corporation | Magnetoresistive magnetic head |
| JPS5613244B2 (US20020125480A1-20020912-P00900.png) * | 1974-07-31 | 1981-03-27 | ||
| NL7804377A (nl) * | 1978-04-25 | 1979-10-29 | Philips Nv | Magnetoweerstandkop. |
| GB2052855B (en) * | 1979-03-30 | 1983-05-18 | Sony Corp | Magnetoresistive transducers |
| DE3032708C2 (de) * | 1980-08-30 | 1987-01-22 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren zur Herstellung eines Dünnschicht-Magnetfeld-Sensors |
-
1982
- 1982-08-10 DE DE3229774A patent/DE3229774C2/de not_active Expired
- 1982-08-10 US US06/406,894 patent/US4477794A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4120984A1 (de) * | 1990-06-26 | 1992-01-09 | Mazda Motor | Sensor mit einem magnetfilm und verfahren zu dessen herstellung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3229774A1 (de) | 1983-03-24 |
| US4477794A (en) | 1984-10-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8128 | New person/name/address of the agent |
Representative=s name: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM. |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8320 | Willingness to grant licences declared (paragraph 23) | ||
| 8339 | Ceased/non-payment of the annual fee |