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Mashiyama Hiroyuki

Affiliate Master Yamaguchi University

Mean-Field Description of Structural Phase Transitions in a Hypercubic Lattice Model

Ferroelectrics Volume 348 Page 131-136
published_at 2007-03
2007020120.pdf
[fulltext] 95 KB
Title
Mean-Field Description of Structural Phase Transitions in a Hypercubic Lattice Model
Creators Mashiyama Hiroyuki
Creators Mashiyama H.
Creator Keywords
mean-field theory structural phase transition D-dimensional hypercubic lattice model anharmonicity
We examine the mean-field theory investigation of a hypercubic lattice model that exhibits structural phase transitions. In this model, with anharmonicity as main characteristic and displacement-displacement stiffness constant, the occurrence of phase transitions mechanism is analyzed and the effects of the anharmonicity on the order of the transition are studied. Discussing the features of the Hamiltonian, thermodynamic properties calculated show the occurrence of the structural phase transitions, which are either (i) a second-order transition (characteristic of short-range attractive part of the double- Morse one-site potential) or (ii) a first-order transition with sharp melting transition and bifurcation entropy, depending on the strength of the anharmonicity.
Languages eng
Resource Type journal article
Publishers Taylor and Francis
Date Issued 2007-03
File Version Author’s Original
Access Rights open access
Relations
[ISSN]0015-0193
[NCID]AA00644949
info:doi/10.1080/00150190701196302
[isVersionOf] [URI]http://www.tandf.co.uk/journals/titles/00150193.asp
Schools 大学院理工学研究科(理学)