《Table 4 Pressure dependence of the characteristic parameters of electron (γ) and phonon (β) specifi

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《第一性原理研究Al-Y合金在压力作用下的晶胞结构、力学性质、热力学性质和电子结构（英文）》

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The dependence of vm，vl and vs with pressure ranging from 0 to 50 GPa are listed in Table 3.The calculated results ofΘD at different pressures are shown in Fig.4.The Debye temperature of Al2Y at 0 K and 0 GPa is 475.84 K，which is consistent with the available values 471.58 K[7]and 461.0 K[30]obtained from measuring elastic constants at room temperature.These results are close to our own，indicating that the previous result was calculated precisely and that the present results，as calculated，are accurate.TheΘD of Al2Y is the highest of the three phases.We also found that the Debye temperature increases as pressure increases for Al-Y phases，although the rate of increase gradually decreases.However，since it is difficult to compare our results regarding the Debye temperature of Al-Y phases at different pressures with calculated and experimental data，the calculated results presented here could be taken as a prediction for future research.