| 摘要 |
PURPOSE:To obtain an information recording medium which maintains recorded information stably and has excellent recording sensitivity by providing a recording film comprising an Au-Te alloy, carbon and hydrogen, on a substrate, and a dielectric film on the recording film. CONSTITUTION:An information recording medium 18 comprises a substrate 13 and a recording film 14 provided thereon. The recording film 14 comprises an Au-Te alloy, carbon and hydrogen. When Au is contained in an amount of 2-50atom%, recording of information is achieved by utilizing a phase change between an aggregated state and a dispersed state of clusters caused by heat generation upon irradiation with a laser light. When a writing laser power for the recording film reaches or exceeds 10mW, the aggregation of cluster components is accompanied by formation of a pit, which hinders accurate reproduction of information. To prevent the pit formation, a dielectric film 20 is provided on the recording film 14. |
