Dielectric studies of the hexatic B-smectic A and crystal B-smectic A transitions |
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Authors: | C Nagabhushan Geetha G Nair B R Ratna R Shashidhar J W Goodby |
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Institution: |
a Raman Research Institute, Bangalore, India
b AT & T Bell Laboratories, Murray Hill, New Jersey, U.S.A. |
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Abstract: | Static dielectric constants, ε∥ and ε⊥ as well as the low frequency dielectric dispersion of ε∥ have been studied in the vicinity of the hexatic B-smectic A transition in n-hexyl-4'-pentyloxybiphenyl-4-carboxylate (65OBC) and n-butyl-4'-hexyloxybiphenyl-4-carboxylate (46OBC) and also near the crystal B-smectic A transition in n-(4-n-butyloxybenzylidene)-4-n-octylaniline (4O. 8). While the behaviour of the dielectric anisotropy is essentially similar for both transitions, the dispersion results show significant differences. |
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