LOW-FREQUENCY RAMAN-SPECTRA IN ESTER LIQUID-CRYSTALS NEAR PHASE-TRANSITIONS

被引：0
作者：
ZHANG, MS
HU, GG
CHEN, Q
SUN, ZM
YIN, Z
机构：
[1] NANJING UNIV,DEPT PHYS,NANJING 210008,PEOPLES R CHINA
[2] NANJING UNIV,SOLID STATE MICROSTRUCT LAB,NANJING 210008,PEOPLES R CHINA
来源：
CHINESE PHYSICS LETTERS | 1991年 / 8卷 / 02期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Phase transitions of the ferroelectric liquid crystal were studied by recording low-frequency Raman spectra and three Raman lines at 15, 49 and 93 cm-1 were observed. The intensities of the 15 and 49 cm-1 modes reduce to zero at smectic C* transition temperature, and in the isotropic phase the 93 cm-1 Raman line with partial frequency shift totally disappears.
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页码：90 / 93
页数：4
相关论文
共 11 条
[1]   RAMAN STUDY OF PARA-AZOXYDIANISOLE AT PHASE TRANSITIONS [J].
AMER, NM ;
SHEN, YR ;
ROSEN, H .
PHYSICAL REVIEW LETTERS, 1970, 24 (13) :718-&
[2]   RAMAN SCATTERING FROM NEMATIC LIQUID-CRYSTALLINE AZOXYBENZENES [J].
AMER, NM ;
SHEN, YR .
JOURNAL OF CHEMICAL PHYSICS, 1972, 56 (06) :2654-+
[3]   LOW-FREQUENCY RAMAN MODE IN SMECTIC LIQUID-CRYSTALS NEAR PHASE-TRANSITIONS [J].
AMER, NM ;
SHEN, YR .
SOLID STATE COMMUNICATIONS, 1973, 12 (04) :263-265
[4]   CRYSTAL TO LIQUID-CRYSTAL TRANSITION STUDIED BY RAMAN SCATTERING [J].
BORER, WJ ;
MITRA, SS ;
BROWN, CW .
PHYSICAL REVIEW LETTERS, 1971, 27 (07) :379-&
[5]   TEMPERATURE-DEPENDENCE OF RAMAN-SCATTERING FROM MONOCRYSTALLINE TEREPHTAL-BIS-BUTYL-ANILINE (TBBA) - LOW-FREQUENCY SPECTRA [J].
FONTANA, MP ;
BINI, S .
PHYSICAL REVIEW A, 1976, 14 (04) :1555-1560
[6]  
LOSEVA MV, 1979, JETP LETT+, V28, P374
[7]  
MEYER RB, 1975, J PHYS LETT-PARIS, V36, pL69, DOI 10.1051/jphyslet:0197500360306900
[8]  
NIX FC, 1935, P ROY SOC LOND A MAT, V150, P552
[9]   FERROELECTRIC BEHAVIOR OF DIFFERENT CLASSES OF SMECTIC LIQUID-CRYSTALS [J].
OSTROVSKII, BI ;
RABINOVICH, AZ ;
SONIN, AS ;
SORKIN, EL ;
STRUKOV, BA ;
TARASKIN, SA .
FERROELECTRICS, 1980, 24 (1-4) :309-312
[10]  
SUSBCHINSKII MM, 1972, RAMAN SPECTRA MOL CR
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