Generalized cluster variation theory for the isotropic-nematic phase transition

Afsar O., Kayacan O.

Physica Scripta, vol.73, no.6, pp.525-530, 2006 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Review
  • Volume: 73 Issue: 6
  • Publication Date: 2006
  • Doi Number: 10.1088/0031-8949/73/6/002
  • Journal Name: Physica Scripta
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.525-530
  • Manisa Celal Bayar University Affiliated: Yes

Abstract

In this study, a cluster variation theory for the Maier-Saupe model of the nematic-isotropic phase transition is generalized by using non-extensive thermostatistics. The variation of long-range order parameter with temperature is investigated and the effect of the possible generalization is shown for some values of the entropic index. The critical value of the long-range order parameter at the nematic-isotropic transition temperature versus the entropic index is also compared with Monte Carlo simulation values and experimental data. © 2006 The Royal Swedish Academy of Sciences.