| 摘要 |
<p>This invention relates to a recording medium having a sufficient difference between the crystallization temperature and the melting point as well as excellent characteristics in writing and erasing. The optical recording medium comprises a recording layer consisting of a recording material capable of recording and erasing through transition between an amorphous phase and a crystalline phase by laser beam heating, the recording material having a composition represented by the general formula: LnaXbAl(100-(a+b)> wherein Ln is either at least one metallic element selected from the group consisting of Y, La, Ce, Nd, Sm and Gd, or Mm (misch metal); X is at least one metallic element selected from the group consisting of Fe, Co, Ni and Cu; and a and b are, in atomic percentage, 40 </= a </= 80 and 5 </= b </= 40.</p> |
