OBSERVATION OF THE PHASE MODE IN AN ANTIFERROELECTRIC LIQUID-CRYSTAL BY PHOTON-CORRELATION TECHNIQUE

被引：36

作者：

SUN, H

ORIHARA, H

ISHIBASHI, Y

机构：

[1] Synthetic Crystal Research Laboratory, School of Engineering, Nagoya University, Chikusa-ku, Furo-cho

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1991年 / 60卷 / 12期

关键词：

ANTIFERROELECTRIC LIQUID CRYSTAL; MHPOBC; PHOTON CORRELATION; PHASE MODE; RELAXATION FREQUENCY;

D O I：

10.1143/JPSJ.60.4175

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temperature dependence of phase mode relaxation frequencies in the SmC(A)* phase (antiferroelectric phase), SmC-gamma* phase (ferrielectric phase) and SmC* phase (ferroelectric phase), and the dispersion of the phase mode in the SmC-gamma* phase were measured by photon correlation technique in R-MHPOBC [GRAPHICS] The relaxation frequencies of the phase modes in SmC(A)* and SmC* are almost the same and are much higher than that in the SmC-gamma* phase. The relaxation frequency gradually decreases with decreasing temperature in the SmC(A)* phase. In the SmC-gamma* phase, the phase mode shows a parabolic dispersion.

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页码：4175 / 4180

页数：6

相关论文

共 14 条

[1] ELECTRIC-FIELD-INDUCED CRITICAL-POINT IN FERROELECTRIC LIQUID-CRYSTALS [J].

BAHR, C ;

HEPPKE, G .

PHYSICAL REVIEW A, 1989, 39 (10) :5459-5461

[2]

BIRADAR AM, 1989, PHYS REV A, V39, P2639

[3] DYNAMICS OF HELICOIDAL FERROELECTRIC SMECTIC-C LIQUID-CRYSTALS [J].

BLINC, R ;

ZEKS, B .

PHYSICAL REVIEW A, 1978, 18 (02) :740-745

[4] ANTIFERROELECTRIC CHIRAL SMECTIC PHASES RESPONSIBLE FOR THE TRISTABLE SWITCHING IN MHPOBC [J].

CHANDANI, ADL ;

GORECKA, E ;

OUCHI, Y ;

TAKEZOE, H ;

FUKUDA, A .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1989, 28 (07) :L1265-L1268

[5] DISPERSION OF THE SM-C-STAR ORDER-PARAMETER FLUCTUATIONS IN THE SM-A AND SM-C-STAR PHASES OF 4-(2'-METHYLBUTYL) PHENYL 4'-NORMAL-OCTYLBIPHENYL-4-CARBOXYLATE [J].

DREVENSEK, I ;

MUSEVIC, I ;

COPIC, M .

PHYSICAL REVIEW A, 1990, 41 (02) :923-928

[6] DIELECTRIC-PROPERTIES NEAR THE SMECTIC-C-STAR-SMECTIC-A PHASE-TRANSITION OF SOME FERROELECTRIC LIQUID-CRYSTALLINE SYSTEMS WITH A VERY LARGE SPONTANEOUS POLARIZATION [J].

FILIPIC, C ;

CARLSSON, T ;

LEVSTIK, A ;

ZEKS, B ;

BLINC, R ;

GOUDA, F ;

LAGERWALL, ST ;

SKARP, K .

PHYSICAL REVIEW A, 1988, 38 (11) :5833-5839

[7] NEW PHASES IN THE FERROELECTRIC LIQUID-CRYSTAL MHPOBC STUDIED BY DIFFERENTIAL SCANNING CALORIMETRY [J].

FUKUI, M ;

ORIHARA, H ;

YAMADA, Y ;

YAMAMOTO, N ;

ISHIBASHI, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1989, 28 (05) :L849-L850

[8] GOLDSTONE MODE AND SOFT MODE AT THE SMECTIC-A-SMECTIC-C-STAR PHASE-TRANSITION STUDIED BY DIELECTRIC-RELAXATION [J].

LEVSTIK, A ;

CARLSSON, T ;

FILIPIC, C ;

LEVSTIK, I ;

ZEKS, B .

PHYSICAL REVIEW A, 1987, 35 (08) :3527-3534

[9] NOVEL TEMPERATURE DEPENDENCES OF HELICAL PITCH IN FERROELECTRIC AND ANTIFERROELECTRIC CHIRAL SMECTIC LIQUID-CRYSTALS [J].

LI, J ;

TAKEZOE, H ;

FUKUDA, A .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1991, 30 (03) :532-536

[10]

MUSEVIC I, 1988, PHYS REV LETT, V60, P1530, DOI 10.1103/PhysRevLett.60.1530