On the Theory of Isostructural Phase Transitions in Crystals

Autor:	V. E. Schneider, Evaldas E. Tornau
Rok vydání:	1982
Předmět:	Phase transition symbols.namesake Condensed matter physics Chemistry media_common.quotation_subject symbols Dielectric Isostructural Condensed Matter Physics Hamiltonian (quantum mechanics) Asymmetry Electronic Optical and Magnetic Materials media_common
Zdroj:	physica status solidi (b). 111:565-574
ISSN:	1521-3951 0370-1972
DOI:	10.1002/pssb.2221110219
Popis:	The thermodynamics of two types of isostructural phase transitions (IPT) is investigated in the framework of the Mitsui model using the molecular field approximation. The first type of IPT is obtained including four-particle interaction members into the Hamiltonian. The consideration dealing with the temperature dependence of the asymmetry parameter explains IPT of the second type. It is shown that the maximum of dielectric constant may appear either in the point of IPT or above it. The investigation carried out gives a qualitative explanation of the experimental facts in numerous crystals undergoing IPT. [Russian Text Ignored].
Databáze:	OpenAIRE
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