作者: Shuichi Ohkubo
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摘要: Optical information-recording media comprise a first transparent substrate through which a laser beam enters, first layer deposited on the substrate, reflection film formed on the layer, an intermediate film, a second formed the intermediate film and second substrate provided film. The recording of each information-recording layers has main composition represented by (GeTe) x Sb 2-y In y Te 3 , its ratio is within ranges 0.04 ≤ < 2 4 8.