Thin film magnetic element with accurately controllable track width and method of manufacturing the same
US6764778B2 · kind B2 · utility
17Cited by
10References
57Claims
0Family size
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Key dates
| Filing date | Oct 31, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | May 17, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1171
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A longitudinal bias layer is laminated above a free magnetic layer with a nonmagnetic layer provided therebetween so that the magnetization direction of the free magnetic layer is oriented by RKKY interaction with the longitudinal bias layer. The RKKY interaction exerts only between the longitudinal bias layer and the regions of the free magnetic layer which are located directly below both ends D of the longitudinal bias layer. Therefore, a thin film magnetic element can be provided, in which the width dimension of a recess formed in the longitudinal bias layer coincides with the magnetic track width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.