Reversible optical information medium

Details Reversible optical information medium Reversible optical information medium

1997-02-06

1999-03-02

Evans, Elizabeth

Stock material or miscellaneous articles

Circular sheet or circular blank

428 644, 428 645, 428913, 43027013, 4304951, 430945, 3692754, 369283, 369288, B32B 300

Patent

active

058768220

ABSTRACT:
A description is given of an reversible optical information medium comprising a substrate (1), a first dielectric layer (2), a phase-change recording layer on the basis of Ge-Sb-Te (3), a second dielectric layer (4), and a metal mirror layer (5). The recording layer (3) comprises an alloy having the composition Ge.sub.50x Sb.sub.40-40x Te.sub.60-10x, in atom %, wherein

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