Classification of Phenomenological Models of Phase Transitions with Three-Component Order Parameters by Methods of Catastrophe Theory: L=Td ( 3m)статьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 27 сентября 2019 г.
Аннотация:The classification of phenomenological models of phase transitions with a three-component order parameter and with a number of control parameters from 1 to 4 has been carried out using equivariant catastrophe theory. Analysis of the phase diagrams of the obtained models has shown that to describe all low symmetry phases, fewer terms in the power series expansion are required, than in the model constructed by the traditional method, taking into account all terms up to 2n-th power (n> 1). The theoretical temperature dependence of the heat capacity is compared with the experimental data in the GaV4S8 compound.