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We propose a phenomenological model to describe the tricritical behavior of the nematic to smectic-
A (N-SmA) phase transition in liquid crystal mixture. To describe the mesophase transitions in binary
mixture, nematic and smectic order parameters have been coupled with the concentration. We show
that a tricritical point on the N-SmA phase transition line can be achieved under certain conditions.
The predictive capability of the present model for determining the tricritical point of a binary mixture
displaying the N-SmA transition has been demonstrated by testing with reported phase diagrams
sharing both phases
CitacióMukherjee, P.; Tamarit, J. Tricritical behavior of the nematic to smectic-A phase transition in the binary mixture of liquid crystal. "Journal of chemical physics", 14 Març 2013, vol. 138, núm. 10, p. 104906-1-104906-6.