The effect of optical purity on the coexistence phenomenon and on the polarization – electric field hysteresis behavior in SmC* and SmC*A phases
| Autor: | J.P. Marcerou, Taoufik Soltani, M. Chemingui, Tahar Othman |
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| Rok vydání: | 2016 |
| Předmět: |
Phase transition
Materials science Condensed matter physics 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Condensed Matter Physics Polarization (waves) 01 natural sciences Ferroelectricity Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Hysteresis Electric field Rotational viscosity 0103 physical sciences Materials Chemistry Antiferroelectricity Physical and Theoretical Chemistry 010306 general physics 0210 nano-technology Spectroscopy |
| Zdroj: | Journal of Molecular Liquids. 222:1101-1108 |
| ISSN: | 0167-7322 |
| DOI: | 10.1016/j.molliq.2016.08.017 |
| Popis: | We investigated the effect of optical purity on the temperature range of coexistence phenomenon of the phase transition from SmC* to SmC*A for various enantiomeric mixtures. The results obtained using dielectric and electro-optic techniques show that the extent of the coexistence phenomenon decreases with decreasing optical purity. We described physical properties including spontaneous polarization, response time, rotational viscosity and Goldstone mode dielectric strength, for all mixtures. Such measurements offer an insight into the factors that affect the extent of coexistence phenomenon. We reported detailed results of polarization–electric field (P − E) hysteresis behavior in SmC* and SmC*A phases with varying optical purity. We also found a correspondence between coexistence and hysteresis phenomenon. |
| Databáze: | OpenAIRE |
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