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发明授权
CN1756668B 相变记录材料和信息记录介质 失效 - 权利终止 转让

相变记录材料和信息记录介质
摘要：
本发明公开了一种可以在其上进行高速记录/擦除的相变记录材料，其具有优异的记录信号特性和记录信号的高保存稳定性，并且即使在长期保存后也具有较小的记录信号反射率变化，即使再次进行改写也能提供优异的记录信号特性。还公开了使用上述材料的信息记录介质。该相变记录材料的特征在于，其主要成分具有由通式Gex(InwSn1-w)yTezSb1-x-y-z表示的组成(其中Sb含量高于Ge含量、In含量、Sn含量和Te含量中的任一项，代表原子比的x、y、z和w满足(i)0≤x≤0.3，(ii)0.07≤y-z，(iii)w×y-z≤0.1，(iv)0＜z，(v)(1-w)×y≤0.35，(vi)0.35≤1-x-y-z)。
摘要（英）：

A phase-change recording material on which high velocity recording/erasing is possible, which provides excellent recording signal characteristics, which provides a high storage stability of the recording signals, with which the change in the reflectivity of the recorded signals is small even after a long term storage, and which provides excellent recording signal characteristics even if overwriting is carried out again, and an information recording medium employing the above material, are provided. It is characterized by containing as the main component a composition represented by Ge x (In wSn 1-w ) y Te z Sb 1-x-y-z (wherein the Sb content is higher than any one of the Ge content, the In content, the Sn content and the Te content, and x, y, z and w representing atomicity ratios satisfy(i) 0 |x |0.3, (ii) 0.07 |y-z, (iii) wy-z |0.1, (iv) 0

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