Recording medium for information

Details Recording medium for information Recording medium for information

1991-01-28

1992-12-15

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 76, 428457, 428913, 346 76L, 3461351, 369788, 430945, B32B 300

Patent

active

051716186

ABSTRACT:
A recording medium for information comprising a substrate, a recording layer provided on the substrate, in which crystalline phases and amorphous phases are reversibly created in accordance with irradiation energy of a light beam irradiated onto the recording layer, wherein the recording layer includes a ternary alloy having the same composition as an alloy of In.sub.3 SbTe.sub.2 and In.sub.50-X/2 Sb.sub.50-X/2 Te.sub.X (where X satisfies 25.ltoreq.X.ltoreq.45), i.e., {(InSb).sub.(100-Y)/200 Te.sub.Y/100 }.sub.100-Z(In.sub.3 Sb.sub.Te.sub.2).sub.Z (where Y, Z satisfy 25.ltoreq.Y.ltoreq.45 and 0.ltoreq.Z.ltoreq.70, and 30.ltoreq.Z.ltoreq.40 and 70<Z.ltoreq.80).

REFERENCES:
patent: 3530441 (1970-09-01), Ovshinsky
patent: 4647944 (1987-03-01), Gravesteijn et al.
Optical Memory, Kobe Japan, Sep. 1989, Jap Journ. Appl. Phy., vol. 28, (1989) Supp. 28-3 pp. 135-139.

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