Low noise thin film metal alloy magnetic recording disk
US5066552A · kind A · utility
29Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1989 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Aug 16, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12931
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved CoPt alloy magnetic recording disk for horizontal recording has a magnetic recording layer which includes oxygen, the oxygen being present preferably in the range of approximately 5 to 30 atomic percent. The resulting disk structure has substantially decreased intrinsic media noise at high linear recording density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.