Patent ID: 6177167
Filing Date: 2001-01-23
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.alpha.In.beta.Sb.gamma.Te.delta., wherein .alpha., .beta., .gamma. and .delta. 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.ltoreq..alpha.<10,1<.beta..ltoreq.20,35.ltoreq..gamma..ltoreq.70,20.ltoreq..delta..ltoreq.35,.alpha.+.beta.+.gamma.+.delta.=100,4.beta.-.delta..ltoreq.0,.gamma.-2.delta..gtoreq.0, and.gamma.-8.alpha..gtoreq.0,a second dielectric protective layer provided on said recording layer,a light reflection and heat dissipation layer provided on said second dielectric protective layer, anda heat dissipation layer which is interposed between said second dielectric protective layer and said light reflection and heat dissipation layer, said heat dissipation layer comprising a Mg--In--O based oxide, with the atomic ratios of Mg and In satisfying a formula of:0.60<In/(In+Mg)<1.0.