Effects of Phonon Dispersion and Anharmonicity on Thermo-physical Properties of Solids

Autor:	Wilfried B. Holzapfel
Rok vydání:	2008
Předmět:	Volume dependence Condensed matter physics Chemistry Phonon Lattice (order) Anharmonicity General Chemistry Zero temperature Pressure derivative Power law
Zdroj:	Zeitschrift für Naturforschung B. 63:718-724
ISSN:	1865-7117 0932-0776
DOI:	10.1515/znb-2008-0619
Popis:	0 (T) is its pressure derivative. Very often only simple power laws are used for the temperature dependence of these “parameters” without any theoretical foundation. However, the thermo-physical properties of solids can be modelled much more reliably by using the thermodynamic approach, which starts from a reasonable model for the volume dependence of the groundstate (zero temperature or static lattice) energy E0(V) of the ideal lattice and adds appropriate terms to the free energy for the various (temperature dependent) excitations from phonons Fph(V,T), from the
Databáze:	OpenAIRE
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