Magneto-optical recording medium
US4814238A · kind A · utility
11Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jul 21, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magneto-optical recording medium, which comprises a thin film constituted of an amorphous alloy (R.sub.x TM.sub.1-x).sub.1-y A.sub.y (where the element material R is at least one rare earth element, the element material TM at least one 3d transition metal and the element material A at least one semi-metal-semiconductor element) and having an easy axis of magnetization in a direction perpendicular to the film surface, the atomic ratio being 0.15.ltoreq.xx.ltoreq.0.35 and 0.00<y.ltoreq.0.20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.