Multi-layer magnetoresistive head and information-reproducing system
US6671138B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | May 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/3996
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An object of the present invention is to provide a magnetoresistive effect type of head that is high in the magnetoresistive rate while including the laminated ferrimagnetic film. The fixed magnetic layer of the magnetoresistive effect type of head has a first fixed magnetic layer, a second fixed magnetic layer laminated at a position farther from the free magnetic layer as compared with the first fixed magnetic layer, and an opposite-parallel-coupling intermediate layer interposed between the first fixed magnetic layer and the second fixed magnetic layer, in which magnetizations of the first and second fixed magnetic layers are coupled with one another in such a manner that the magnetizations are pointed in directions which are substantially parallel and mutually opposite. The second fixed magnetic layer is formed with a material that is different from a material of said first fixed magnetic layer, and has a resistivity higher than that of said first fixed magnetic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.