Chin. Phys. Lett.  1994, Vol. 11 Issue (9): 585-588    DOI:
Original Articles |
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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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.
Keywords: 78.30.-j      61.30.–v     
Published: 01 September 1994
PACS:  78.30.-j (Infrared and Raman spectra)  
  61.30.–v  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y1994/V11/I9/0585
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