利用第一性原理方法并结合准谐德拜模型计算了B1相结构LiF在高温高压下的热力学性质,其零温零压下的平衡体积和体弹模量的计算结果与实验值相符.通过准谐德拜模型获得了该结构的相对体积、体弹模量、热容、熵、德拜温度与温度和压强的关系.
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