Volume 36, Number 3, October III 1996
|Page(s)||221 - 226|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
A simple model for phase transitions in antiferroelectric liquid crystals
Raman Research Institute - C.V. Raman Avenue,
Bangalore 560080, India
Accepted: 12 September 1996
We propose a phenomenological model which accounts for the entire sequence of subphases exhibited by antiferroelectric smectic liquid crystals. It incorporates, up to the second neighbour, both chiral and nonchiral interactions between the smectic layers. Phase diagrams are presented as functions of appropriate parameters. Some predictions of the model are: i) an intermediate nonuniform modulated phase () in which the difference in the azimuthal angles between neighbouring layers has two different values for adjacent pairs of layers, ii) re-entrance of the ferrielectric phase, iii) critical end points in transitions between phases with the same global symmetry, and iv) tricritical points in transitions involving the phase.
PACS: 77.80.-e – Ferroelectricity and antiferroelectricity / 77.80.Bh – Phase transitions and Curie point / 77.84.Nh – Liquids, emulsions, and suspensions; liquid crystals
© EDP Sciences, 1996
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.