| 摘要 |
PROBLEM TO BE SOLVED: To provide a phase change type optical recording medium useful for a large number of times of repetitive recording. SOLUTION: The material of a recording layer consists of Sb, Te and an element whose covalent bond radius is 1.5 to 1.7, and the dissociation energy for Sb or Te is 70 to 95 kcalmol-1. |
