Patent ID: 7709073
Filing Date: 2010-05-04
Classification: G11B,H01L,Y10T

Abstract:
1. An information recording medium comprising a recording layer which can generate a reversible phase change, wherein the recording layer comprises a Ge—Bi—Te-M-based material which comprises Ge, Bi, Te and an element “M” and is expressed with a following formula (1): wherein “M” represents at least one element selected from the group consisting of Ga and In; and wherein “a”, “b” and “d” satisfy 25≦a≦60, 0<b≦18, 35≦d≦55, and 82≦a+b+d<100, wherein the Ge—Bi—Te-M-based material is expressed with a following formula (3): wherein “M” represents at least one element selected from the group consisting of Ga and In; and wherein “x” and “y” satisfy 80≦x<100 and 0<y≦0.9.