Patent ID: 7858290
Filing Date: 2010-12-28
Classification: A61P,G11B,H01L,Y10S

Abstract:
1. An information recording medium comprising: a substrate; and an information layer provided on the substrate, the information layer comprising: a recording layer whose phase can be changed between a crystalline phase and an amorphous phase by irradiation with a laser beam or application of electric energy; a Cr-containing layer comprising at least Cr and O, arranged in contact with a first surface of the recording layer; a Ga-containing layer comprising at least Ga and O, arranged in contact with a second surface of the recording layer, and wherein the Cr-containing layer, the recording layer, and the Ga-containing layer are arranged in this order from a side from which the laser beam is incident, and the Ga-containing layer comprises a material that can be expressed by the following composition formula: where Z1 is at least one oxide selected from ZrO