Equations of state according to the Mott model and a description of pressure-induced phase transitions in Se, Te, AlAs, and FeBO3

Arguments are presented to explain why the equations of finite-strain mechanics often used to describe the properties of substances under high pressure are unsuitable for describing phase processes induced by pressure. By comparing experimental volume-pressure dependences ν(σ) for Se, Te, FeBO 3 , a...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2011-05, Vol.75 (5), p.645-649
Main Authors: Gufan, A. Yu, Naskalova, O. V., Gufan, Yu. M.
Format: Article
Language:English
Subjects:
Equations of state
Hadrons
Heavy Ions
Nuclear Physics
Phase transitions
Physics
Physics and Astronomy
Proceedings of the International Symposium “Physics of Low Dimensional Systems and Surfaces” LDS-2
Rubber
Strain
Transition pressure
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Summary:Arguments are presented to explain why the equations of finite-strain mechanics often used to describe the properties of substances under high pressure are unsuitable for describing phase processes induced by pressure. By comparing experimental volume-pressure dependences ν(σ) for Se, Te, FeBO 3 , and AlAs, it is shown that equations of state derived from the unified non-equilibrium potential have a domain of applicability and allow the correct prediction of the phase-transition pressure and relative abrupt changes in the volume of elementary phase cells if the transition occurs at equilibrium.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873811050194