Method for preparing phase change optical recording medium

Details Method for preparing phase change optical recording medium Method for preparing phase change optical recording medium

1996-02-09

1997-05-06

Angebranndt, Martin

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430945, 430346, 20419215, 20419226, 20419227, C23C 1434

Patent

active

056270127

ABSTRACT:
An optical recording medium is prepared by forming on a substrate a phase change recording layer comprising elements A, B, C and optional D wherein A is silver and/or gold, B is antimony and/or bismuth, C is tellurium and/or selenium, D is indium or a mixture of indium and aluminum and/or phosphorus. Formation of the recording layer is carried out by the step of sputtering an A--C base metal and the step of sputtering a B base metal optionally containing D in this successive order or reverse order; or by the step of sputtering an A--C base metal, the step of sputtering a B base metal, and the step of sputtering a D base metal in this successive order or reverse order. Since the resulting recording layer is already crystallized, the method eliminates a need for extra initialization.

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