A mean-field model for the phase diagram of liquid crystals

Tüblek, A.; Yurtseven, H.; Salihoğlu, S.

doi:10.1080/01411599808207999

Cited by 7 publications

(1 citation statement)

References 14 publications

(11 reference statements)

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“…Using the mean field theory, we have calculated P-T [27,28] and T-X [29] phase diagrams in ammonium halides, ammonia [30], ice [31][32][33], and regarding the liquid crystals phase diagrams near the nematic-Sm A-Sm C (NAC) [34,35] and nematic-Sm A-Sm C* (NAC*) [36] point in our earlier studies.…”

Section: Introductionmentioning

confidence: 99%

Calculation of a generalised smectic–hexatic phase diagram in liquid crystals

Yurtseven

Karaçalı

2012

Physics and Chemistry of Liquids

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This study gives a generalised smectic-hexatic phase diagram calculated by the Landau mean field theory. Our calculated phase line equations are fitted to the experimental phase lines, which represent first-order transition for the liquid crystals studied here. The temperature-and concentrationdependent phase lines calculated in this study describe the observed T-X phase diagram for the smectic-hexatic transitions. This indicates that the method of calculating the phase line equations from the mean field theory is general and it can be applied to other phase transitions in liquid crystals.

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Section: Introductionmentioning

confidence: 99%

Calculation of a generalised smectic–hexatic phase diagram in liquid crystals

Yurtseven

Karaçalı

2012

Physics and Chemistry of Liquids

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A temperature–concentration (T–X) phase diagram calculated using the mean field theory for liquid crystals

2013

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Phase-line equations for smectic-hexatic phase transitions in liquid crystals were derived using the Landau phenomenological theory. In particular, second-order transitions for the smectic-A-smectic-C (SmA-SmC) and hexatic-B-hexatic-F (or HexI) transitions were studied and the tricritical points for these transitions were located. The calculated phase-line equations were fitted (using experimental data for various liquid crystals) to construct a generalized T-X phase diagram. It was shown that the T-X phase diagram calculated from the free energy adequately describes the observed behavior of liquid crystals during smectic-hexatic transitions.

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