| 摘要 |
PURPOSE:To obtain an optical disk recording medium which permits easy recording, reproducing, erasing and rerecording of information and has high phase stability of a recording state by forming an alloy layer consisting of In and Sb or In and Sb and a specific metal within a specific compsn. range. CONSTITUTION:The alloy film expressed by the formula (X is 55wt%<=X<=80 wt%, Y is 0wt%<=Y<=20wt%, M is >=1 kinds selected from Au, Ag, Cu, Pd, Pt, Al, Si, Ge, Ga, Sn, Te, Se and Bi) is deposited by evaporation on a substrate 2 consisting of polymethyl methacrylate, etc. by irradiating an electron beam from, for example, an electron beam generating source 6 on an alloy material 4 contained in a crucible 5. A protecting film consisting of fluoride such as MgF2, AlF3 or the like or oxide such as TeO3, TiO2 or the like is then provided on an alloy layer. The suitable selection of the compsn. between 120-160 deg.C phase transition temp. of the alloy layer is thus made possible. The recording medium which requires less writing energy and permits stable repeated erasing and writing in the recording phase is obtd. |
