Stock material or miscellaneous articles – Circular sheet or circular blank
Patent
1996-08-06
1998-08-04
Krynski, William
Stock material or miscellaneous articles
Circular sheet or circular blank
428 642, 428 644, 428 645, 428 647, 428913, 43027013, 4304951, 430945, 369283, 369288, B32B 300
Patent
active
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.
Evans Elizabeth
Krynski William
LG Electronics Inc.
White John P.
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