Erasable optical recording materials and methods based on tellurium alloys
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United States of America Patent
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Mar 23, 1993
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N/A
app pub date -
Sep 17, 1990
filing date -
Sep 17, 1990
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Expired
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Abstract
An optical recording element comprising a thin film of an alloy is disclosed. The alloy is represented by the formula 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.
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