Dielectric studies of a ferroelectric liquid crystal |
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| Authors: | A. M. Biradarf S. Wróbel W. Haase |
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| Affiliation: | 1. Institut für Physikalische Chemie, Technische Hochschule , PetersenStra?e 20, D-6100 , Darmstadt , F. R. Germany;2. National Physical Laboratory , Dr K. S. Krishnan Road, New Delhi , India;3. Jagellonian University, Institute of Physics , Reymonta 4, Krakow , Poland;4. Institut für Physikalische Chemie, Technische Hochschule , PetersenStra?e 20, D-6100 , Darmstadt , F. R. Germany |
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| Abstract: | Measurements of the complex dielectric permittivity in the frequency range 30 Hz-13MHz have been made for the chiral smectic C and smectic A phases of the mixture ZLI-3654. In the S*C phase a large contribution to the electric permittivity coming from the Goldstone mode was found. For the pretransitional region S*C-SA, only the soft mode has been detected. It is found that the molecular relaxation originating from the reorientation around the short axis is well separated from the soft mode even in the pretransitional region. The influence of different relaxation modes on the dielectric anisotropy is presented. |
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