Optical recording medium and a method of fabricating the same

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428 642, 428 644, 428 645, 428 647, 428913, 43027013, 4304951, 430945, 369283, 369288, B32B 300

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057890552

ABSTRACT:
An optical recording medium of phase change improves the erase ratio and the repeat writing characteristic by coexistence of an amorphous phase and a crystalline phase at the stage of initiation so as to reduce the size of crystalline grain in a recording layer and a method of fabricating the same. The optical recording medium of phase change comprises: a substrate; a first dielectric layer deposited on said substrate; a recording layer deposited on said first dielectric layer; a second dielectric layer deposited on said recording layer; a reflection layer and a protective film formed sequentially on said second dieletric layer; said recording layer being consisted of (GeSbTe).sub.x (In.sub.y Sb.sub.1-y).sub.1-x ; and a crystalline phase of said recording layer being a structure co-existing with a crystalline material of GeSbTe and an amorphous material of InSb.

REFERENCES:
patent: 5191565 (1993-03-01), Inoue et al.
patent: 5305297 (1994-04-01), Nishiuchi et al.
patent: 5505835 (1996-04-01), Sakaue et al.

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