Magnetoresistive sensor having exchange-coupled stabilization for transverse bias layer
US5508866A · kind A · utility
79Cited by
3References
25Claims
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Key dates
| Filing date | Aug 15, 1994 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Aug 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/399
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetoresistive (MR) read sensor in which the MR layer is transversely biased by a soft magnetic layer separated from the MR layer by a nonmagnetic spacer layer an antiferromagnetic stabilization layer of NiO provides a stabilizing exchange-coupled magnetic field to the transverse bias layer insuring that the transverse bias layer is fully saturated in a preferred direction during sensor operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.