| 摘要 |
PROBLEM TO BE SOLVED: To obtain a phase change type optical recording medium having no degradation to repeated use, moreover, having easy initial crystallization. SOLUTION: The optical recording medium having a recording layer comprising a phase change type recording medium, wherein the recording layer has as main components Ag, In, Sb and Te, comprises at least one element selected from B, C, N, Al, Si and P, and Cl, Br or I, or an alkali metal element. |
