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Original Articles

Temperature Dependence of Field Hysteresis Loop in Nemato-Cholesteric Mixtures

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Pages 3-14 | Received 07 Jul 1994, Published online: 24 Sep 2006
 

Abstract

Temperature dependence of the field hysteresis loop (δU) of the cholesterol-nematic phase transitions in mixtures based on strong and weak polar nematics. The ephires of the cholesterol (0.2… 1.6 weight %) were used as optically active dopants. For mixtures, in which fluctuation embryos have a major role at low temperatures, anomalous growth of δU is observed. The influence of temperature dependence of constants of elasticity and step of induced spiral on analogical dependence δU =f(T) takes place. Magnitude of δU can be changed by changing the percentage of cholesterine in the mixture.

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