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Molecular Crystals and Liquid Crystals Volume 108, 1984 - Issue 1-2
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Original Articles

Dielectric Relaxation Studies on Two Systems Exhibiting the Induced Smectic A Phase

B. S. Srikanta Raman Research Institute, Bangalore, 560080, India
&
N. V. Madhusudana Raman Research Institute, Bangalore, 560080, India
Pages 39-49 | Received 29 Sep 1983, Published online: 20 Apr 2011
 
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Abstract

Recently we reported some physical studies (layer spacings using X-ray scattering, low frequency dielectric constants) on two systems exhibiting a maximum (indicating an induced smectic A) as well as a minimum in the A-N transition boundary. In this paper we report measurements of the dielectric relaxation of ε|| (up to 13 MHz) for a few compositions of the two systems. The activation energy in the A phase of the mixtures corresponding to the maximum in the A-N boundary is higher than that of the pure polar component. The results are discussed in relation to the molecular interactions giving rise to the induced smectic A phase.

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