Method of making a magnetoresistive read transducer having hard magnetic bias
US5079035A · kind A · utility
56Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1990 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Dec 18, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49067
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetoresistive (MR) read transducer having passive end regions separated by a central active region in which an MR layer is formed which extends over substantially only the central active region and in which a hard magnetic layer is formed in each end region. The hard magnetic layers form an abutting junction having electrical and magnetic continuity with the MR layer to produce a longitudinal bias in the MR sensor. The transducer is produced by a method in which the same stencil defines the extent of both the MR layer and the hard magnetic layers so that the abutting junctions are formed easily and reliably.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.