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Material Requirements for Reversible Phase Change Optical Recording

  • Kurt A. Rubin (a1)

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.

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[21] Rugar, D. and Rubin, K. A., IBM Corporation, unpublished data.

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Material Requirements for Reversible Phase Change Optical Recording

  • Kurt A. Rubin (a1)

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