期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：3
页码：10212
出版社：S&S Publications
摘要：The phase transition temperatures and textural changes in homologous series of 2-(4- n alkanoyloxybenzylidenamino) benzothiazoles (n BABTH), where n=12 and 16, were studied by using Polarising OpticalMicroscope (POM). The temperature and frequency dependence of dielectric constant and dielectric loss were madeout in the frequency range 1 KHz to 1 MHz .Anomalies in dielectric properties were recorded near phase transitionswhen dielectric constant and dielectric loss have been measured as a function of frequency and temperature. Changes indielectric constant and loss are at low frequencies, but constant at higher frequencies. The variation of activation energyand relaxation times were studied in smectic phase.
