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Material Requirements for Reversible Phase Change Optical Recording

Published online by Cambridge University Press:  15 February 2011

Kurt A. Rubin
Kurt A. Rubin*
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120
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Abstract

The science and technology underlying phase change reversible optical storage, with an emphasis on the media, are reviewed. The transformation kinetics and their effect on writing (amorphization), erasing (crystallization) and long-term data stability are discussed. Phase separation is shown to affect cyclability and cause increased media noise. A readback CNR of 65.0 db was obtained by eliminating grooves as a source of media noise and using a recording layer which crystallizes into a cubic phase. Recording performance at short wavelengths is discussed.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 230: Symposium R – Phase Transformation Kinetics in Thin Films , 1991, 239
Copyright
Copyright © Materials Research Society 1992

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