Magnetooptical recording medium and information recording and reproducing methods using the recording medium
US5616428A · kind A · utility
21Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1996 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | May 7, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetooptical recording medium includes a first magnetic layer, in which data is to be stored, and a second magnetic layer, wherein the first magnetic layer is perpendicularly magnetizable at both room temperature and a raised temperature above room temperature, and the second magnetic layer is in-plane magnetizable at room temperature and becomes perpendicularly magnetizable at the raised temperature, which is composed of Gd.sub.x (Fe.sub.100-y Co.sub.y).sub.100-x, where 27.ltoreq.x.ltoreq.31 and 28.ltoreq.y.ltoreq.50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.