德拜模型
热膨胀
晶格常数
晶格振动
黛比
凝聚态物理
格子(音乐)
热力学
体积模量
热的
材料科学
物理
模数
声子
量子力学
衍射
声学
作者
V. L. Moruzzi,J. F. Janak,Karlheinz Schwarz
出处
期刊:Physical review
日期:1988-01-15
卷期号:37 (2): 790-799
被引量:821
标识
DOI:10.1103/physrevb.37.790
摘要
The thermal properties of the 14 nonmagnetic cubic metals through the 4d transition series are derived from first-principles electronic-structure calculations coupled with a Debye treatment of the vibrating lattice. Debye temperatures and Gr\"uneisen constants are derived from an analysis of the compressional characteristics of rigid-lattice binding curves and are used to define the contribution of the lattice vibrations to the free energy. A minimization of the resulting free energy with respect to volume yields temperature-dependent lattice separations and coefficients of thermal expansion. Theoretical values of cohesive energies, equilibrium lattice separations, bulk moduli, Debye temperatures, Gr\"uneisen constants, and coefficients of thermal expansion are derived directly from computed electronic-structure results. Good agreement with experiment is found for all computed quantities.
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