Thermal expansion of solids: review on theories

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Abstract

The coefficient of thermal expansion of a solid can be derived from (1) anharmonicity of atomic vibrations; (2) lattice dynamics; (3) equation of state by G. Mie; (4) equation of state by E. Grüneisen; and (6) potential of interatomic interaction. Only the last theory in this list provides us with the equation describing correctly all features in the thermal expansion: (1) proportionality between thermal expansion and heat capacity; (2) various values of “plateau” for the coefficient of thermal expansion at temperatures close to Debye temperature; and (3) acceleration of the thermal expansion in the vicinity of melting point.

Original languageEnglish
Pages (from-to)1097-1113
Number of pages17
JournalJournal of Thermal Analysis and Calorimetry
Volume142
Issue number2
Early online date29 Jan 2020
DOIs
Publication statusPublished - 1 Oct 2020

Keywords

  • Anharmonicity
  • Gruneisen
  • Heat capacity
  • Interatomic potential
  • Thermal expansion
  • THERMODYNAMIC PROPERTIES
  • SODIUM
  • PRESSURE-DEPENDENCE
  • GRUNEISEN-PARAMETER
  • EQUATION-OF-STATE
  • TEMPERATURE
  • DEGREES-K
  • ISOTHERMAL COMPRESSIBILITY
  • LATTICE
  • HEAT-CAPACITY

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