Volume 38, Number 9, June III 1997
|Page(s)||663 - 668|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Stability of ferroelectric fluid and solid phases in the Stockmayer model
Institut für Theoretische Physik, Freie Universität Berlin,
Arnimallee 14, D-14195 Berlin, Germany
Accepted: 20 May 1997
Mimimizing a free-energy functional, we investigate the stability of ferroelectric fluid and various solid phases in the Stockmayer system. Our functional is based on the correlations of the isotropic fluid, calculated by integral equations. At the reduced dipole moment we found a ferroelectric fluid, but this phase is surpassed by a polarized body-centered tetragonal crystal. Moreover, the system seems to have no liquid phase at all. This behaviour changes when the strength of the isotropic attraction is increased.
PACS: 61.25.Em – Molecular liquids / 64.70.Dv – Solid-liquid transitions / 77.80.-e – Ferroelectricity and antiferroelectricity
© EDP Sciences, 1997
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