A Thermodynamic Model for Pressurized Solids

A Thermodynamic Model for Pressurized Solids
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加压固体的热力学模型

DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
H. Schlosser
H. Schlosser
中科院分区：
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文献类型：
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作者：
Miron Kaufman;H. Schlosser

文献摘要

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通过假定固体的普适状态方程和零压下的自由能等于简谐晶体（德拜）自由能，建立了加压下固体的热力学模型。该模型适用于黄金。在纳米晶体的情况下，该模型再现了所观察到的等压热容和热膨胀的增强。我们的模型计算是免费的模糊性和不一致的Gruneisen方程，这是在以前的理论工作中使用。
A thermodynamic model for solids under pressure is developed by assuming the universal equation of state and that under zero pressure the free energy is equal to the harmonic crystal (Debye) free energy. The model is applied to gold. In the case of nanocrystals this model reproduces the observed enhancement of the isobaric heat capacity and of the thermal expansion. Our model calculations are free of the ambiguities and inconsistencies connected with the Gruneisen equation, which was used in previous theoretical work.