Abstract:
A rewritable phase change optical recording medium includes a substrate, a dielectric layer deposited on a surface of the substrate, and an optical recording layer deposited on the dielectric layer, wherein the dielectric layer may be omitted. The optical recording layer contains a composition of GexSb100-x-y-zMyEz, wherein 0.5≦x≦14.5; 0.5≦y≦14.5; 0≦z≦14.5; and M and E are different and are selected from the group consisting of Te, Cr, V, Ti, Ag, Sn, Si, Bi, Se, Al, Au, Ni, Fe, Cu, Mn, O, Ga, Cd, In, Pb and Hf, wherein M is not Te, when x is zero; and E is not Sn, when M is Te. The optical recording composition has a small crystal grain, a high ratio of reflectivity of the amorphous phase to that of the crystalline phase thereof, and a high crystallization rate, so that a blue light laser can be used to write/erase the recording medium.
Abstract:
A rewritable phase change optical recording medium includes a substrate, a dielectric layer deposited on a surface of the substrate, and an optical recording layer deposited on the dielectric layer, wherein the dielectric layer may be omitted. The optical recording layer contains a composition of GexSb100-x-y-zMyEz, wherein 0.5≦x≦14.5; 0.5≦y≦14.5; 0≦z≦14.5; and M and E are different and are selected from the group consisting of Te, Cr, V, Ti, Ag, Sn, Si, Bi, Se, Al, Au, Ni, Fe, Cu, Mn, O, Ga, Cd, In, Pb and Hf, wherein M is not Te, when x is zero; and E is not Sn, when M is Te. The optical recording composition has a small crystal grain, a high ratio of reflectivity of the amorphous phase to that of the crystalline phase thereof, and a high crystallization rate, so that a blue light laser can be used to write/erase the recording medium.
Abstract translation:可重写的相变光记录介质包括基板,沉积在基板的表面上的电介质层和沉积在电介质层上的光记录层,其中介电层可以省略。 该光学记录层含有一种组合物,其中0.5 = x <= 14.5; 0.5 <= y <= 14.5; 0 <= z <= 14.5; M,E不同,选自Te,Cr,V,Ti,Ag,Sn,Si,Bi,Se,Al,Au,Ni,Fe,Cu,Mn,O, In,Pb和Hf,其中M不为Te,当x为零时; 并且E不是Sn,当M是Te时。 光学记录组合物具有小的晶粒,非晶相的反射率与其结晶相的高比率和高结晶速率,使得可以使用蓝色光激光来写入/擦除记录介质。