| 摘要 |
PROBLEM TO BE SOLVED: To provide a phase change optical recording medium having excellent thermal stability and erasing ratio characteristics in an amorphous state even by sufficiently thinning a thickness of a recording layer and, capable of enhancing its sensitivity. SOLUTION: The phase change optical recording medium comprises a phase change recording layer having a composition component ratio of Gey Mz (Sbx Te1-x )1-y-z (wherein M is at least one of Sn and Pb, 0.60<=x<=0.85, 0<;y+z<=0.20, y>=1/19z). |
