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Orientational order in the vicinity of a second order smectic-A to nematic phase transition
Authors:B Cabane  WG Clark
Institution:Physics Department, University of California, Los Angeles, California 90024, U.S.A.
Abstract:Measurements of the quadrupolar splitting of the central N14 are reported for the liquid crystal NBOA. The splitting is a measure of the orientational order parameter. At the nematic to smectic-A transition, the orientational order parameter varies continuously as a function of temperature, but with a discontinuous slope, as expected of a second order phase transition. The results are interpreted in terms of the Kobayashi-McMillan theory.
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