A. Gupta, R. Gross, et al.
SPIE Advances in Semiconductors and Superconductors 1990
Broad frequency range dielectric spectroscopy, X-ray diffraction, electro-optical methods and thermal analysis are used to characterize a single component liquid crystal with a monotropic broad range room temperature ferroelectric SmC* phase. The dielectric spectrum shows a Soft mode and a Goldstone mode. Unlike in other ferroelectric liquid crystals the Goldstone mode of this substance has a strongly temperature dependent characteristic frequency. It is proposed that glassy-state fluctuations are responsible for the appreciable increase of activation energy (from 37 to 91 kJ/mol) upon cooling from 318 K (TCA) to 278 K. Beside these modes a Domain mode is detected. Measurements in the high frequency range 1 MHz to 450 GHz show an additional relaxation process. © 1991, Taylor & Francis Group, LLC. All rights reserved.
A. Gupta, R. Gross, et al.
SPIE Advances in Semiconductors and Superconductors 1990
Sharee J. McNab, Richard J. Blaikie
Materials Research Society Symposium - Proceedings
John G. Long, Peter C. Searson, et al.
JES
M. Hargrove, S.W. Crowder, et al.
IEDM 1998