| 摘要 |
PROBLEM TO BE SOLVED: To provide a recording layer material enabling a high speed medium high in the repeating overwrite number of times, having long preserving life and free from linear velocity dependence, and a compsn. therefor. SOLUTION: In an optical recording medium wherein a first dielectric layer, a recording layer, a second dielectric layer and a reflecting radiation layer are successively laminated on a substrate in this order, the constitutional elements of the recording layer mainly comprise Ag, In, Sb and Te and the respective compositional ratios of AgαInβSbγTeδα, β, γ, δ(atomic %) are 1<=α<=10, 1<β<=20, 35<=γ<=70 and 20<=δ<=35 and α+β+γ+δ is 100. |
