Magnetic head of a magnetoresistance type having an underlying layer having a laminated structure of a tungsten-group metal layer formed on a tantalum-group metal layer
US6829122B2 · kind B2 · utility
6Cited by
12References
6Claims
0Family size
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Key dates
| Filing date | Sep 24, 2001 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Feb 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3113
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head of a magnetoresistance type is provided. The magnetic head comprises a magnetoresistance film, an underlying layer formed on each of both sides of the magnetoresistance film, and a magnetic-domain regulating film formed on the underlying layer so as to regulate a magnetic domain of a free magnetic layer in the magnetoresistance film. The underlying layer has a laminated structure of a tungsten-(W)-group metal layer formed on a tantalum-(Ta)-group metal layer. The underlying layer is formed so thick as to arrange the magnetic-domain regulating film at a position corresponding to the free magnetic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.