Information recording medium and method for producing the same

摘要

An information recording medium which ensures high reliability and favorable overwrite cyclability is provided, even when an interface layer is not provided between a recording layer and a dielectric layer. The recording layer 4 and the dielectric layers 2 and 6 are formed on the surface of the substrate 1. In the recording layer 4, a phase change is generated between a crystal phase and an amorphous phase by irradiation of light or application of an electric energy. The dielectric layers 2 and 6 are Zr-Cr-O- based material layers comprising Zr, Cr and O, preferably consisting essentially of material expressed, for example, with the formula (ZrO2)M(Cr2O3)100-M (mol %) wherein 20≤M≤80.