Erasable optical recording materials and methods based on tellurium alloys
US5196294A · kind A · utility
3Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1990 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Sep 17, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording element comprising a thin film of an alloy is disclosed. The alloy is represented by the formula EQU Te.sub.a (Sb.sub.x Sn.sub.y In.sub.z).sub.1-a wherein a is between about 0.38 and 0.62; x is between about 0.05 and 0.65; y divided by z is between about 0.5 and 5; with the proviso that the product of (y+z) and (1-a) is greater than about 0.20. The alloys have improved data stability while retaining excellent write-erase characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.