Optical information storage medium

Details Optical information storage medium Optical information storage medium

1995-12-01

1998-05-12

Evans, Elizabeth

Stock material or miscellaneous articles

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428 644, 428 645, 428913, 43027012, 43027013, 4304951, 430945, 369283, 369288, B32B 300

Patent

active

057502285

ABSTRACT:
An optical information storage medium includes a multilayer structure formed on a substrate. The multilayer structure is formed by a sputtering process in a discharge gas and includes at least a first dielectric layer, a recording layer which shows reversible phase change between an amorphous phase and a crystal phase, and a second dielectric layer. The multilayer structure contains sufficiently small amount of the discharge gas so that a limited amount or less of voids of the discharge gas generates in the recording layer during repeated overwrite operations.

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M. Horie et al., "Analysis of Degradation Phenomena in Million Cycle Overwriting Process", Proceedings of the 3rd Symposium on Phase Transition, '91 Autumn, pp. 7-13.

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