Magnetic head with magnetoresistive sensor, inductive write head, and shield
US4967298A · kind A · utility
70Cited by
12References
5Claims
0Family size
Inventor
Key dates
| Filing date | Sep 29, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Sep 29, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/096
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An elongated magnetoresistive sensor strip longitudinally biased to maintain a single domain sense region by exchange-biasing material atomically coupled to the strip at the ends of the strip outside of a central sense region. The magnetoresistive sense strip is included in a magnetic head which has a leading pole, a trailing pole, and a shield. A first gap is located between the leading pole and the trailing pole and a second gap is located between the trailing pole and the shield with the sense strip located in the second gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.