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Improved theory of calculating mixed crystals phonon frequencies based on MREI model
Author(s): 
Pages: 620-625
Year: Issue:  5
Journal: Chinese Journal of Quantum Electronics

Abstract: 在随机元素等位移(MREI)模型的基础上,进一步改进了模型.在计算多元混晶声子频率时,对不同模式采用了不同的次近邻常数,并且推算了近邻常数与组分x呈负幂指数变化的规律,从而不使用任何调节参数计算了几种AB1-xCx混晶的声子频率对组分x的依赖关系.理论结果和实验数据两者符合较好,对今后的实验给出了一定程度的指导.
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