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- W2012306646 abstract "Abstract Low frequency dielectric relaxation, spontaneous polarization, optical tilt angle, response times and torsional viscosity studies are carried out on a ferroelectric liquid crystal compound (S)-2-Chloro-3-(4-benzamidoacetophenyl)-1-(4'-dodecyloxybenzoyl)-benzoato, (S)-1-[4'-dodecy loxycarbonyl)phenyl]-4-[2-cloro- (4-benzamidoacetyl)phenylpropionato)-benzoate, 2C1. BAAP.120-BBP exhibiting nematic (N), cholesteric (NC ), smectic-A (SA ) and a room temperature smectic-C* phases. Phase transition temperatures are determined from temperature variation of dielectric permittivity 1(T). Dielectric loss spectrum study in N, NC , and SA phases is found to exhibit one relaxation while S*C phase exhibits a goldstone relaxation in addition to soft mode. Dipolar relaxation in N, NC , and SA phases is found to follow Arrhinius shift through their activation energies. The effect of electric field on goldstone mode studied through Curie-Weiss law in phase reflects characteristic ferroelectric nature. Bias variation of goldstone mode relaxation is also reported. Temperature variation of spontaneous polarization, tilt angle in phase agrees with mean field prediction to infer long range transverse dipole interaction. Data of spontaneous polarization and response times exhibited by smectic-C* are discussed on a comparative scale. Temperature variation of computed torsional viscocity in phase agrees with reported values in other compounds" @default.
- W2012306646 created "2016-06-24" @default.
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- W2012306646 date "2002-01-01" @default.
- W2012306646 modified "2023-10-14" @default.
- W2012306646 title "Low Frequency dielectric and optical characterisation of room temperature ferroelectric liquid crystal 2C1. BAAP.120-BBP" @default.
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- W2012306646 doi "https://doi.org/10.1080/00150190208260629" @default.
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