Magnetic recording medium
US4756967A · kind A · utility
22Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1986 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | May 23, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium, comprising a non-magnetic substrate, a magnetic recording layer of a ferromagnetic film on the substrate, and a protective layer on the magnetic recording layer. The protective layer is formed of oxide of an alloy of Co and a metal selected from the group consisting of Ti, Zr, Hf, Nb, Ta, Mo, Rh, Pd, and Si. The protective layer is preferably formed by deposition from vapor phase of the metal components constituting the alloy in an oxygen atmosphere under a reduced pressure. The protective layer provides for a durability and corrosion resistance to the magnetic recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.