Spin-valve magnetic head with the pinned layer having different directions for its magnetization axis and its easy axis
US6034845A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1998 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Feb 17, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49034
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A spin-valve magnetic head has a first ferromagnetic layer with a first easy axis of magnetization extending in a first direction, and a second ferromagnetic layer provided on, and separated from, the first ferromagnetic layer. The second ferromagnetic layer has a magnetization in a second direction substantially perpendicular to the first direction. The magnetization defines a line in the second direction. An anti-ferromagnetic layer provided on the second ferromagnetic layer is exchange coupled to the second ferromagnetic layer. The second ferromagnetic layer has a second easy axis of magnetization extending in a direction intersecting the line in the second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.