GB2435346B - A magnetic sensor - Google Patents
A magnetic sensorInfo
- Publication number
- GB2435346B GB2435346B GB0707614A GB0707614A GB2435346B GB 2435346 B GB2435346 B GB 2435346B GB 0707614 A GB0707614 A GB 0707614A GB 0707614 A GB0707614 A GB 0707614A GB 2435346 B GB2435346 B GB 2435346B
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic sensor
- magnetic
- sensor
- 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
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
- G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant 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
-
- 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
-
- 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
- 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
- G11B5/3932—Magnetic biasing films
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Hall/Mr Elements (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0707614A GB2435346B (en) | 2004-01-15 | 2004-12-14 | A magnetic sensor |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004008492A JP4309772B2 (en) | 2004-01-15 | 2004-01-15 | Magnetic detection element |
GB0427311A GB2410121B (en) | 2004-01-15 | 2004-12-14 | A magnetic sensor |
GB0707614A GB2435346B (en) | 2004-01-15 | 2004-12-14 | A magnetic sensor |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0707614D0 GB0707614D0 (en) | 2007-05-30 |
GB2435346A GB2435346A (en) | 2007-08-22 |
GB2435346B true GB2435346B (en) | 2008-01-02 |
Family
ID=38792064
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0707614A Expired - Fee Related GB2435346B (en) | 2004-01-15 | 2004-12-14 | A magnetic sensor |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2435346B (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002329903A (en) * | 2001-05-01 | 2002-11-15 | Alps Electric Co Ltd | Magnetism detecting element and method of manufacturing the same |
JP2002374018A (en) * | 2001-06-15 | 2002-12-26 | Alps Electric Co Ltd | Magnetic detection element and manufacturing method therefor |
US20030035255A1 (en) * | 2001-07-19 | 2003-02-20 | Alps Electric Co., Ltd. | Exchange coupling film capable of improving playback characteristics |
US6556390B1 (en) * | 1999-10-28 | 2003-04-29 | Seagate Technology Llc | Spin valve sensors with an oxide layer utilizing electron specular scattering effect |
US6580589B1 (en) * | 2000-10-06 | 2003-06-17 | International Business Machines Corporation | Pinned layer structure for a spin valve sensor having cobalt iron (CoFe) and cobalt iron oxide (CoFeO) laminated layers |
US20030192168A1 (en) * | 2002-01-04 | 2003-10-16 | Headway Technologies, Inc. | FeTa nano-oxide layer in pinned layer for enhancement of giant magnetoresistance in bottom spin valve structures |
-
2004
- 2004-12-14 GB GB0707614A patent/GB2435346B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6556390B1 (en) * | 1999-10-28 | 2003-04-29 | Seagate Technology Llc | Spin valve sensors with an oxide layer utilizing electron specular scattering effect |
US6580589B1 (en) * | 2000-10-06 | 2003-06-17 | International Business Machines Corporation | Pinned layer structure for a spin valve sensor having cobalt iron (CoFe) and cobalt iron oxide (CoFeO) laminated layers |
JP2002329903A (en) * | 2001-05-01 | 2002-11-15 | Alps Electric Co Ltd | Magnetism detecting element and method of manufacturing the same |
JP2002374018A (en) * | 2001-06-15 | 2002-12-26 | Alps Electric Co Ltd | Magnetic detection element and manufacturing method therefor |
US20030035255A1 (en) * | 2001-07-19 | 2003-02-20 | Alps Electric Co., Ltd. | Exchange coupling film capable of improving playback characteristics |
US20030192168A1 (en) * | 2002-01-04 | 2003-10-16 | Headway Technologies, Inc. | FeTa nano-oxide layer in pinned layer for enhancement of giant magnetoresistance in bottom spin valve structures |
Also Published As
Publication number | Publication date |
---|---|
GB2435346A (en) | 2007-08-22 |
GB0707614D0 (en) | 2007-05-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20191214 |