Magnetic recording medium
US4642270A · kind A · utility
19Cited by
0References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1984 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Nov 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12937
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic recording medium comprising a non-magnetic substrate and a magnetic thin film formed on the surface thereof and including at least two layers, the upper layer in the form of a crystalline cobalt-chromium alloy layer suitable for perpendicular magnetization is placed on the lower layer in the form of an amorphous layer of permalloy having high permeability and low coercive force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.