DIELECTRIC DISPERSION IN FERROELECTRIC LIQUID CRYSTALS

A. Levstik , B. Žek , I. Levstik , R. Blinc , C. Filipič

The low frequency order parameter fluctuation spectrum of chiral DOBAMBC has been studied at the ferroelectric smectic A → C transition by dielectric relaxation spectroscopy. The frequency and the dielectric strength of the symmetry recovering Goldstone mode for q = 0 in the ferroelectric phase have been determined. The frequency is approximately temperature independent, decreasing slightly when approaching Tc from below, while the intensity decreases for an order of magnitude and seems to go to zero at Tc.

Domaines: Articles anciens

A. Levstik, B. Žek, I. Levstik, R. Blinc, C. Filipič. DIELECTRIC DISPERSION IN FERROELECTRIC LIQUID CRYSTALS. Journal de Physique Colloques, 1979, 40 (C3), pp.C3-303-C3-305. ⟨10.1051/jphyscol:1979357⟩. ⟨jpa-00218753⟩