摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phase transition optical recording medium having a high erasure rate at a high linear speed, high recording sensitivity and high stability of a recording mark. <P>SOLUTION: In the phase transition optical recording medium wherein information is recorded and erased by utilizing reversible phase transition between a crystal phase and an amorphous phase of a recording layer, a protective layer consists of a film which is constituted of (1) any one or more of oxides and (2) any one or more of carbides and wherein each element other than oxygen of the oxides which constitute the protective layer has an XPS peak position (n) of 0.01 to 0.7, if the peak position at the time when the element is the stoichiometric composition of the oxide and the peak position at the time when the element is of a single form are defined as 0 and 1, respectively. <P>COPYRIGHT: (C)2003,JPO |