发明授权
US07659049B2 Phase-change recording material used for information recording medium and information recording medium employing it 有权
用于信息记录介质的相变记录材料和使用它的信息记录介质

Phase-change recording material used for information recording medium and information recording medium employing it
摘要:
A phase-change recording material used for an information recording medium utilizing a crystalline state as a non-recorded state and an amorphous state as a recorded state, which has the composition of the following formula (1) as the main component: (Sb1−xSnx)1−y−w−zGeyTewM1z  formula (1) wherein each of x, y, z and w represents atomicity, x, z and w are numbers which satisfy 0.01≦x≦0.5, 0≦z≦0.3 and 0≦w≦0.1, respectively, and the element M1 is at least one element selected from the group consisting of In, Ga, Pt, Pd, Ag, rare earth elements, Se, N, O, C, Zn, Si, Al, Bi, Ta, W, Nb and V, and (I) when z=0 and w=0, y is a number which satisfies 0.1≦y≦0.3, (II) when 0≦z≦0.3 and w=0, y is a number which satisfies 0.05≦y≦0.3, and (III) when 0≦z≦0.3 and 0
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