| 摘要 |
<p>A phase change optical recording medium having a wide recording power margin and excellent durability to repetitive recording is disclosed. The medium includes a first protective layer, a recording layer, an interface layer, a second protective layer, and a reflective layer, the layers disposed on a transparent substrate, wherein the interface layer includes a mixture of ZrO2 and at least one oxide of an element, excluding zirconium, selected from a group consisting of elements of period numbers 3 to 6 and group numbers 2 to 14 of the periodic table of elements. Preferably, the medium further includes a second interface layer including the mixture of ZrO2 between the first protective layer and the recording layer. In another preferable aspect, the mixture of ZrO2 is represented by the following formula: <DF>Ä(ZrO2)100- alpha (X) alpha Ü beta (Z) gamma (ZnS) delta </DF> wherein "X" represents an oxide selected from MgO, CaO, Sc2O3, Y2O3, and CeO2; "Z" represents an oxide selected from TiO2, SiO2, Al2O3, MgO, Ta2O5, and ZnO; " alpha " is 2-15 mol%; " beta " is 40-100 mol%; " gamma " is 0-60 mol%; " delta " is 0-60 mol %; and beta + gamma + delta = 100 mol%.</p> |
