Characterization of the B₆ phase by dielectric measurements

Abstract

Dielectric measurements on a sample from banana-shaped molecules were carried out between 1Hz and 10MHz. The sample exhibits at higher temperatures the B₆ phase and at lower temperatures the B₁ phase. No difference in the dynamical behaviour between these two phases with respect to the relaxation times, dielectric increments and distribution parameters could be detected. Both phases show a negative dipole correlation for the reorientation of the dipoles in the stiff middle part about the long axes.