Super-resolution magneto-optical recording medium using magnetostatic coupling and information reproduction method using the medium
US5717662A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1996 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | May 10, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B11/10586
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magneto-optical recording medium includes a reproducing layer for contributing to reproduction, a recording layer for storing information, and an intermediate layer disposed between the reproducing and recording layers. The intermediate layer magnetostatically couples the reproducing layer and the recording layer in an entire area between the two layers. The reproducing layer has a compensation temperature between room temperature and a Curie temperature thereof. Sublattice magnetizations in the reproducing layer and recording layer are oriented in opposite directions at one of a temperature lower than the compensation temperature and a temperature higher than the compensation temperature, and are oriented in the same direction in the other of a temperature lower than the compensation temperature and a temperature higher than the compensation temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.