Magnetic recording medium
US4816351A · kind A · utility
9Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1986 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Feb 25, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/672
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium is formed by disposing on a substrate a magnetic recording layer comprising a vertically magnetizable film of Co alone or a Co alloy, or Fe alone or a ferromagnetic Fe alloy. The lubricity, wear resistance and corrosion resistance of the magnetic recording medium are improved by forming an upper layer of Co oxide on the magnetic recording layer. The upper layer per se can be a magnetizable film, particularly a vertically magnetizable film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.