Magnetoresistive read transducer having hard magnetic shunt bias
US5005096A · kind A · utility
64Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1988 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Dec 21, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3932
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetoresistive (MR) read transducer comprising an MR layer having passive end regions separated by a central active region. A longitudinal bias is produced by a thin film of hard magnetic material in the end regions only, and the thin film of hard magnetic material is spaced from the MR layer by a nonmagnetic spacer layer so that a magnetostatic longitudinal bias is produced of a level to maintain the passive end regions of the MR layer in a stable state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.