| 摘要 |
A phase-change recording material on which high speed recording/erasing is possible, which has excellent recording characteristics, which has a high storage stability of recording signals and which is excellent in the repeated recording durability, and an information recording medium using the above material are provided. A phase-change recording material characterized by containing as the main component a composition represented by {(Sb<SUB>1-x</SUB>Ge<SUB>x</SUB>)<SUB>1-y</SUB>In<SUB>y</SUB>}<SUB>1-z-w</SUB>M<SUB>z</SUB>Te<SUB>w </SUB>wherein x, y, z and w are numbers satisfying 0.001<=x<=0.3, 0<=y<=0.4, 0<=z<=0.2 and 0<=w<=0.1, and M is at least one element selected from lanthanoids, provided that z and w are not 0 at the same time.
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