Volume 39, Number 3, July I 1997
|Page(s)||335 - 340|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
An ANNNXY model for transversely polarised non-chiral smectic liquid crystals
Raman Research Institute - C.V. Raman Avenue, Bangalore 560080, India
Accepted: 22 June 1997
We propose an axial next nearest neighbour xy (ANNNXY) model to describe phase transitions in smectic liquid crystals made of bent non-chiral molecules which exhibit transverse polarisation. The model includes a polar and a quadrupolar NN coupling as well as a competing antiferroelectric NNN coupling between the layers. As the temperature is lowered, the most general sequence of phases predicted by the model is: paraelectric-helielectric (H)-antiferroelectric-reentrant H-4 layer antiphase-helielectric (Hf)-ferroelectric. We believe that Hf and the antiphase have been seen in very recent experiments.
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, 1997
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.