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
Title
Mean-Field Description of Structural Phase Transitions in a Hypercubic Lattice Model
Creators
Mashiyama Hiroyuki
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
[isVersionOf]
[URI]http://www.tandf.co.uk/journals/titles/00150193.asp
Schools
大学院理工学研究科（理学）