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Structure phase transition and elastic properties of hafnium: first-principles study

机译:ha的结构相变和弹性性质:第一性原理研究

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The projector augmented wave method is used within the Perdew-Burke-Ernzerhof form of generalized gradient approximation to investigate the effect of hydrostatic pressure on the structures of hafnium metal. The obtained phase transformation pressures and the elastic constants at zero pressure are in exce11ent agreement with the experimental values. The elastic constants of a-Hf under high pressures are predicted for the first time. We find that the modulus and the averaged aggregate wave velocities increase monotonica11y with increasing pressure. The Debye temperature of a-Hf is also calculated at different pressures. The obtained result is we11-consistent with the available experimental data.
机译:在广义梯度近似的Perdew-Burke-Ernzerhof形式中使用了投影仪增强波方法,以研究静水压力对ha金属结构的影响。所获得的相变压力和零压力下的弹性常数与实验值非常吻合。首次预测了高压下α-Hf的弹性常数。我们发现模量和平均聚集波速随压力的增加而单调增加。 a-Hf的德拜温度也在不同压力下计算。所得结果与现有实验数据一致。

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