Electric field induced phase transition in a ferroelectric smectic-C* liquid crystal
Laboratoire de Physique de la Matière Molle Faculté des Sciences de Tunis, 2092 El Manar Tunis, Tunisia
2 Centre de Recherches Paul Pascal 115, Av. Albert-Schweitzer, 33600 Pessac France
Revised: 4 May 2011
Accepted: 11 May 2011
Published online: 21 July 2011
We have experimentally investigated the unwinding process of the ferroelectric Sm-C* phase of a chiral AFLC smectic liquid crystal compound 12OF1M7 using the electro-optic properties, microscopic observations and constant current method. We found that this process occurs via two steps through an intermediate phase. Furthermore, we have established the (E-T) phase diagram of the studied compound by combining the experimental results.
© EDP Sciences, 2011