Magnetoresistive head and head setting method
US5264980A · kind A · utility
30Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1989 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Aug 2, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3903
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of establishing a single domain in a magnetoresistive sensor positioned in a gap between two shield layers of magnetic material. The method includes the steps of heating the magnetoresistive head above the Neel temperature of at least one of the shield layers of magnetic material. Applying an external magnetic field to the magnetoresistive sensor and the shield layers for establishing a single magnetic domain in the magnetoresistive sensor. Reducing the intensity of the external magnetic field for holding the magnetization of the magnetoresistive sensor during cooling. Cooling the magnetoresistive head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.