Patent ID: 7390381

Claim:
A method of manufacturing an information recording medium including a substrate and a recording layer disposed above the substrate, the method comprising forming the recording layer by a vapor deposition method, wherein the recording layer comprises, as constituent elements, Ge, Sb, Te, Sn, and at least one element M selected from Ag, Al, Cr, Mn, and N and is transformed in phase reversibly between a crystal phase and an amorphous phase by an irradiation of an energy beam, and the recording layer is formed of a material expressed by a composition formula of [(Ge, Sn) A Sb 2 Te 3+A ] 100−B M B , where 0<A≦10, 0<B≦20, such that A and B each represent an atomic percent and M is at least one of Ag, Al, Cr, Mn or N.