| 摘要 |
PURPOSE:To provide a data recording medium good in recording/reproduction characteristics and having high sensitivity and good stability in low cost. CONSTITUTION:A data recording medium receiving the irradiation with laser beam to perform recording by a change in atom arrangement has substrates 1, 1', recording layers 2, 2' receiving the irradiation with recording energy beam to generate a change in atom arrangement and the reflecting layers 3, 3' provided so as to be adjacent to the recording layers and the average compsn. of the recording layer is represented by AwDxSbySez (wherein w, x, y and z are o<=w<=30, 3<=x<=57, 3<=y<=57 and 40<=z<=90 on an atomic % basis, D is at least one element among Sn, In, Ge, Pb, Si, Bi, Ga, Au, Ag and Cu and A is Sb, Se and an element other than the element represented by D and rare gas). |
