Magnetic recording medium and magnetic recording apparatus using the same
US6447936B1 · kind B1 · utility
22Cited by
12References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2000 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jun 15, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Magnetic recording medium includes at least two layers having different magnetic anisotropy constants formed on a substrate and the perpendicular magnetic anisotropy of the second magnetic film of those magnetic films, far from the substrate surface, made equal to or larger than that of the first magnetic film near to the substrate surface, thus improving the magnetic isolation of the first magnetic film near to the substrate surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.