In stoichiometric GeTe-Sb$-2$/Te$-3$/ films, reversible phase change optical recording materials, Sb addition is used widely to improve the data retention time and the repetition cycles, but its mechanism is not clear. To clarify the effect of excess Sb, the effects of Te and Ge addition were also investigated in the compositions from the stoichiometry Ge$-2$/Sb$- 2$/Te$-5$/ toward the vertices in the Ge-Te-Sb triangle. By DSC measurements, it was found that a retention ability for amorphous (`write') states related to the increase of repetition cycles is larger in the Sb addition than in the Te and Ge addition. By XRD measurements, it was understood that an optimum ratio of (Sb,Te)$beta@/GeTe(111), about 0.5 was necessary to static repetition cycles approximately 10$+6$/ in the laser annealed film of 1000 angstroms thick.
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机译：在化工统计计量GetE-SB $ -2 $ / TE $ -3 $ /胶片中，可逆相变光学记录材料，SB加入广泛用于改善数据保留时间和重复循环，但其机制尚不清楚。为了澄清多余的Sb的效果，还在从Metichiometry GE $--2 $ / SB $ - 2 $ / TE -5 $ /朝向GE-TE中的顶点的组合物中研究了TE和GE添加的影响-sb三角形。通过DSC测量，发现与重复循环的增加相关的非晶（“写入”的状态的保留能力在Sb中的增加比TE和GE添加更大。通过XRD测量，据了解，静态重复循环约为0.5的（SB，TE）$ @ / GetE（111）的最佳比率约为0.5美元，激光退火薄膜厚度为1000埃厚。
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