Patent ID: 7083894

Claim:
An optical recording medium having a phase change recording layer composed of a plurality of elements, wherein the recording layer contains Sb, Mn, and Te, and is formed such that conditions of: 20≦a<80 −0.646 a+ 49.46 ≦b≦ −0.354 a+ 50.54, and 20<b≦40 0≦c≦40, and a+b+c =100 are satisfied, when a composition of the recording layer is expressed by Sb a Mn b Te c , and a, b, and c are expressed in terms of atomic %; and the recording layer contains elements M as an additive element, the element M comprising at least Ag, and is formed such that a condition of: 0<f≦15 is satisfied, when a composition of the recording layer is expresses by (Sb(MnTe)) 100−f M f , and f is expressed in terms of atomic %.