Composite substrate for a thin-film magnetic head
US4608293A · kind A · utility
28Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1983 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Mar 2, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24355
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composite substrate for a thin-film magnetic head comprises a substrate material, and an insulating oxide film formed thereon, and defining a smooth and stress-free surface having a surface roughness not greater than 50 .ANG.. A film of a magnetic material having improved magnetic properties may be formed on the surface of the oxide film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.