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Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 75, 4 (2007) 042701
Discontinuous change in smectic layer thickness in ferrielectric liquid crystals
V.P. Panov, J.K. Vij, Yu.P. Panarin, C. Blanc, Vladimir Lorman1, J.W. Goodby

The temperature dependence of the thickness of thick free-standing films is studied using a high-resolution film thickness measurement technique. A small discontinuity in the temperature dependence of the smectic layer thickness at every phase transition between ferro-, ferri-, and antiferroelectric phases is observed. We show that the major contribution to it arises from a change in the smectic tilt angle.
1 :  LPTA - Laboratoire de Physique Théorique et Astroparticules
Sciences du Vivant/Biochimie, Biologie Moléculaire/Biophysique
smectic liquid crystals – liquid crystal phase transformations – ferroelectric transitions – ferroelectric thin films – antiferroelectricity – liquid films