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Analysis of Quasielastic Light Scattering in Ferroelectric Liquid Crystal |
| ZHANG Ping;YIN Zhen;ZHANG Mingsheng1;HUANG Qiang2 |
| Department of Physics, 1Center for Materials Analysis and National Laboratory of Solid-State Microstructures, 2Center for Computation, Nanjing University, Nanjing 210008
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| Cite this article: |
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ZHANG Ping, YIN Zhen, ZHANG Mingsheng et al 1994 Chin. Phys. Lett. 11 585-588 |
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Abstract Temperature dependence of Raman spectra of ferroelectric liquid crystal MBOPDOB is examined in spectral region 0-30cm-1 with spectral emphasis on the quasielastic light scattering near solid-Sm C* transition. The quasielastic components are well fitted to Debye-type susceptibility function. With increase of temperature the inverse of the relaxation time T linearly goes to zero in the temperature range below the transition, manifesting a critical slowing-down. The relaxation time keeps same big value in the Sm C* phase as that at the transition point owing to long orientational relaxation in the liquid phase.
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| Keywords:
78.30.-j
61.30.–v
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Published: 01 September 1994
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