Magneto-optical recording medium having amorphous artificially layered structure of rare earth element and transition metal element
US4727005A · kind A · utility
11Cited by
9References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1986 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Jul 28, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12951
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optical recording medium is disclosed. The medium comprises a substrate and a magnetic layer formed thereon. The magnetic layer has a multi layered structure in which rare earth metal element layers and transition metal layers are alternately superposed with each other, with layer thickness of the order of an atomic layer. The layer thickness of the rare earth metal element is selected not less than 2 .ANG. but less than 6 .ANG..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.