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Conferences > ODS > 1991 > TuA > TuA1

Erasable Phase Change Media

Takeo Ohta

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Abstract

We found two key attributes of cycle stability for phase change erasable disc media. One is nitrogen modified active layer of GeTe-Sb2Te3-Sb system. The other is the combination of dielectric material of ZnS-SiO2 mixture and SiO2.

The disc media having the modified active layer and ZnS-SiO2 dielectric layer show wide tolerance for laser power and long life of more than 60 years. New disc construction shows two million overwrite cycle stability of BER characteristics.

© 1991 Optical Society of America

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