Issue |
Europhys. Lett.
Volume 38, Number 9, June III 1997
|
|
---|---|---|
Page(s) | 663 - 668 | |
Section | Condensed matter: structure, thermal and mechanical properties | |
DOI | https://doi.org/10.1209/epl/i1997-00300-9 | |
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
Received:
21
February
1997
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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