DE2409323C3 - - Google Patents
Info
- Publication number
- DE2409323C3 DE2409323C3 DE2409323A DE2409323A DE2409323C3 DE 2409323 C3 DE2409323 C3 DE 2409323C3 DE 2409323 A DE2409323 A DE 2409323A DE 2409323 A DE2409323 A DE 2409323A DE 2409323 C3 DE2409323 C3 DE 2409323C3
- Authority
- DE
- Germany
- Prior art keywords
- layer
- magnetoresistive
- layers
- magnetization
- magnetic recording
- 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 description 31
- 230000005415 magnetization Effects 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 4
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 74
- 230000005284 excitation Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004304 visual acuity Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000007740 vapor deposition Methods 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
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3945—Heads comprising more than one sensitive element
- G11B5/3948—Heads comprising more than one sensitive element the sensitive elements being active read-out elements
- G11B5/3951—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes
- G11B5/3954—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes the active elements transducing on a single track
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
- Hall/Mr Elements (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7306826A FR2219482B1 (US07935154-20110503-C00006.png) | 1973-02-27 | 1973-02-27 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2409323A1 DE2409323A1 (de) | 1974-09-19 |
| DE2409323B2 DE2409323B2 (de) | 1978-07-27 |
| DE2409323C3 true DE2409323C3 (US07935154-20110503-C00006.png) | 1979-04-05 |
Family
ID=9115438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2409323A Granted DE2409323B2 (de) | 1973-02-27 | 1974-02-27 | Magnetoresistiver Wiedergabekopf |
Country Status (7)
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052748A (en) * | 1974-04-01 | 1977-10-04 | U.S. Philips Corporation | Magnetoresistive magnetic head |
| NL7405727A (nl) * | 1974-04-29 | 1975-10-31 | Philips Nv | Magnetoweerstandkop. |
| GB1545295A (en) * | 1975-04-14 | 1979-05-10 | Philips Electronic Associated | Magnetoresistive read head |
| US4012781A (en) * | 1975-08-14 | 1977-03-15 | International Business Machines Corporation | Magnetoresistive read head assembly for servo operation |
| JPS52117609A (en) * | 1976-03-29 | 1977-10-03 | Fujitsu Ltd | Magnetic head |
| US4356523A (en) * | 1980-06-09 | 1982-10-26 | Ampex Corporation | Narrow track magnetoresistive transducer assembly |
| NL8101962A (nl) * | 1981-04-22 | 1982-11-16 | Philips Nv | Magnetische sensor. |
| JPS58100214A (ja) * | 1981-12-10 | 1983-06-14 | Matsushita Electric Ind Co Ltd | 薄膜磁気ヘツド |
| US4589041A (en) * | 1982-08-30 | 1986-05-13 | International Business Machines Corporation | Differential magnetoresistive sensor for vertical recording |
| US6600631B1 (en) * | 1989-11-27 | 2003-07-29 | Censtor Corp. | Transducer/flexure/conductor structure for electromagnetic read/write system |
| US5155642A (en) * | 1989-11-29 | 1992-10-13 | International Business Machines Corporation | Anisotropy configuration for longitudinally constrained magnetoresistive transducers |
| US5079831A (en) * | 1991-02-07 | 1992-01-14 | Applied Magnetics Corporation | Method of making a dual stripe magnetic head |
| US5159513A (en) * | 1991-02-08 | 1992-10-27 | International Business Machines Corporation | Magnetoresistive sensor based on the spin valve effect |
| US5270892A (en) * | 1992-06-05 | 1993-12-14 | Hewlett-Packard Company | Conductor configuration for magnetoresistive transducers |
| JPH077196A (ja) * | 1992-12-29 | 1995-01-10 | Eastman Kodak Co | 磁界センサ及び磁界検知方法 |
| US6510031B1 (en) | 1995-03-31 | 2003-01-21 | International Business Machines Corporation | Magnetoresistive sensor with magnetostatic coupling to obtain opposite alignment of magnetic regions |
| US5706151A (en) * | 1996-12-12 | 1998-01-06 | Eastman Kodak Company | Low bias current paired magnetoresistive head with misaligned anisotropy axes |
| US7180715B2 (en) * | 2004-02-26 | 2007-02-20 | Hitachi Global Storage Technologies Netherlands B.V. | Canted easy axis in self-pinned layers |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3274575A (en) * | 1963-08-01 | 1966-09-20 | Koster Heinz Adolf De | Transducer having a magneto-resistive bridge circuit |
| US3731007A (en) * | 1971-04-19 | 1973-05-01 | Denki Onkyo Co Ltd | Magnetic head having a magneto-resistive bridge circuit |
| US3813692A (en) * | 1972-10-11 | 1974-05-28 | Ibm | Internally biased magnetoresistive magnetic transducer |
-
1973
- 1973-02-27 FR FR7306826A patent/FR2219482B1/fr not_active Expired
-
1974
- 1974-02-05 NL NL7401548A patent/NL7401548A/xx not_active Application Discontinuation
- 1974-02-12 IT IT67394/74A patent/IT1004930B/it active
- 1974-02-22 US US445304A patent/US3879760A/en not_active Expired - Lifetime
- 1974-02-26 GB GB870574A patent/GB1457189A/en not_active Expired
- 1974-02-27 DE DE2409323A patent/DE2409323B2/de active Granted
- 1974-05-29 BE BE144880A patent/BE815689A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2219482A1 (US07935154-20110503-C00006.png) | 1974-09-20 |
| DE2409323B2 (de) | 1978-07-27 |
| DE2409323A1 (de) | 1974-09-19 |
| IT1004930B (it) | 1976-07-20 |
| FR2219482B1 (US07935154-20110503-C00006.png) | 1978-03-03 |
| US3879760A (en) | 1975-04-22 |
| GB1457189A (en) | 1976-12-01 |
| BE815689A (fr) | 1974-09-16 |
| NL7401548A (US07935154-20110503-C00006.png) | 1974-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |