Thin film magnetic recording disk comprising alternating layers of a CoNi or CoPt alloy and a non-magnetic spacer layer
US5051288A · kind A · utility
52Cited by
7References
8Claims
0Family size
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Key dates
| Filing date | Mar 16, 1989 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Mar 16, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12806
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved CoPt based or CoNi based alloy magnetic recording disk for horizontal recording has a magnetic recording layer which is a laminated structure of relatively thin magnetic alloy films separated by relatively thin non-magnetic spacer films. The resulting laminated disk structure has substantially decreased intrinsic media noise at high linear recording densities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.