Magnetic thin film head, the fabrication method, and magnetic disk
US7274541B2 · kind B2 · utility
1Cited by
5References
10Claims
0Family size
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Key dates
| Filing date | Apr 1, 2005 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Apr 1, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49044
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In formation of an upper shield of a magnetic thin film head by electroplating, a current density of electroplating is regulated stepwise with time. Thus, in the upper shield formation, a film composition and magnetic characteristic with respect to the direction of film thickness can be controlled precisely, making it possible to provide a magnetic thin film head featuring significantly reduced noise-after-write and output fluctuation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.