Patent ID: 6391417
Filing Date: 2002-05-21
Classification: C22C,G11B,Y10S,Y10T

Abstract:
An optical information recording medium comprising:a first dielectric protective layer, a recording layer provided on said first dielectric protective layer, comprising a material represented by a chemical formula of Ag&agr;In&bgr;Sb&ggr;Te&dgr;, wherein &agr;, &bgr;, &ggr; and &dgr; respectively represent an atomic percent of Ag, an atomic percent of In, an atomic percent of Sb, and an atomic percent of Te, and satisfy the conditions of: 1&lE;&agr;<10, 135&lE;&ggr;&lE;70, 20&lE;&dgr;&lE;35, &agr;+&bgr;+&ggr;+&dgr;=100, 4&bgr;âˆ’&dgr;&lE;0, &ggr;âˆ’2&dgr;&gE;0, and &ggr;âˆ’8&agr;&gE;0, a second dielectric protective layer provided on said recording layer, and a light reflection and heat dissipation layer provided on said second dielectric protective layer.