Landau theory of the reentrant nematic-smectic A phase transition
Теория Ландау возвратного нематико–смектического A фазового перехода
1979-01-01
SCID: 54.1/rxeej72p
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Landau theoryP-T phase diagramcoexistence linereentrant nematic-smectic A transitionsmectic ordering
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Abstract (AI)
The reentrant, nematic to smectic A phase transition is shown to follow from the Landau theory if one assumes the existence of an optimum density for smectic ordering. The shape of the coexistence line in the P-T plane is fit exactly by this theory. The effects of concentration on reentrant behaviour are also explained.
Key Findings
1
The proposed Landau theory fits the coexistence-line shape in the pressure–temperature plane exactly.
2
The reentrant nematic-to-smectic A transition emerges within Landau theory when an optimum density for smectic ordering is assumed.
3
The theory explains how concentration influences reentrant behavior in the nematic–smectic A transition.
Research Object
reentrant nematic-to-smectic A phase transition
Research Subject
Landau-theoretical explanation of the transition, including the optimum smectic-ordering density, the coexistence-line shape in the P–T plane, and concentration effects on reentrant behavior
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1979-01-01
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