Magnetic recording medium having a nitrogen-containing barrier layer
US6146737A · kind A · utility
74Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1998 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Sep 18, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium having a barrier layer deposited directly on the magnetic recording layer is described. The barrier layer is deposited by sputter deposition under a nitrogen-containing sputtering atmosphere to form a nitrogen-containing chromium or chromium alloy barrier layer. The barrier layer is effective to inhibit migration of cobalt from the underlying magnetic recording layer, reducing corrosion of the medium and improving magnetic recording performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.