Tricritical behaviour of the smectic A to smectic C transition for binary liquid crystal mixtures

Dollase, Thilo; Fung, B. M.

doi:10.1080/02678299608032910

Cited by 13 publications

(1 citation statement)

References 31 publications

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“…Although in most of the materials studied the SmA-SmC phase transition appears to be of second order, first order transition also occur in several ferroelectric liquid crystals [9][10][11] and in a binary mixture of liquid crystal. 12,13 Although there have been several molecular theories [14][15][16] and phenomenological theories [17][18][19][20][21][22] for the SmA-SmC phase transition, none of them is consistent with all experimental observations. De Gennes 17 pointed out that the SmA-SmC phase transition should belong to the three-dimensional XY universality class and might be continuous.…”

Section: Introductionmentioning

confidence: 51%

Tricritical behavior of the smectic-A to smectic-C phase transition in a liquid crystal mixture

Das

Mukherjee

2008

The Journal of Chemical Physics

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A phenomenological approach to the description of the smectic-A to smectic-C phase transition in a liquid crystal mixture is proposed. The problem of the first or second order transition is explored by means of the variation of the concentration. The influence of the concentration on this transition is discussed by varying the coupling between the concentration variable and the order parameters. We show that a tricritical point on the smectic-A to smectic-C phase transition line can be achieved under certain conditions. The theoretical prediction is found to be in good qualitative agreement with experimental results.

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