Thin film magnetic head comprising shield layer having stabilized magnetic domain structure
US6292334A · kind A · utility
51Cited by
10References
36Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3967
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A lower shield layer is formed in a multilayered structure in which four magnetic layers are laminated with nonmagnetic intermediate layers held therebetween. The static magnetic coupling produced at the end of each of the magnetic layers can promote the condition to put each of the magnetic layers into the single magnetic domain state. An upper shield layer is also formed in a multilayered structure including two magnetic layers so that the two magnetic layers are put into the single magnetic domain state, and the shield function and core function can simultaneously be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.