REWRITABLE OPTICAL DATA STORAGE MEDIUM AND USE OF SUCH A MEDIUM.

摘要

A description is given of a rewritable optical data storage medium having a phase-change recording layer on the basis of an alloy of Ga-In-Sb, which composition is situated within the pentagonal area TUVW in a triangular ternary composition diagram. These alloys show an amorphous phase stability of 10 year or more at 30 C. Such a medium is suitable for high speed recording, e.g. at least 30 Mbits/sec, such as DVD+RW, DVD-RW, DVD-RAM, high speed CD-RW, DVR-red and DVR-blue.