| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a phase change recording medium which is used with a large linear velocity, where recording mark stably exists, and which thus excels in overall characteristics. <P>SOLUTION: The invention refers to a medium for optical information recording having at least a phase change type recording layer on a substrate and the said phase change type recording layer is composed of a structure expressed by a general formula (I) ((Sb<SB>x</SB>Te<SB>1-x</SB>)<SB>y</SB>Ge<SB>1-y</SB>)<SB>z</SB>M<SB>1-z</SB>(x is the number within the range of 0.7≤x≤0.85, y is the number within the range of 0.8≤y<1, z is the number within the range of 0.88≤z<1, and M is In and/or Ga). <P>COPYRIGHT: (C)2007,JPO&INPIT |
