Dielectric measurements of new antiferroelectric liquid crystals

被引：11

作者：

Perkowski, P. ^{[1
]}

Ogrodnik, K. ^{[1
]}

Lada, D. ^{[1
]}

Piecek, W. ^{[1
]}

Rutkowska, J. ^{[1
]}

Raszewski, Z. ^{[1
]}

Zurowska, M. ^{[2
]}

Dabrowski, R. ^{[2
]}

Sun, X. ^{[3
]}

机构：

[1] Mil Univ Technol, Inst Appl Phys, PL-00908 Warsaw, Poland

[2] Mil Univ Technol, Inst Chem, PL-00908 Warsaw, Poland

[3] Nanyang Technol Univ, Singapore 639798, Singapore

来源：

OPTO-ELECTRONICS REVIEW | 2008年 / 16卷 / 03期

关键词：

relaxation modes; antiferroelectric liquid crystals; dielectric permittivity;

D O I：

10.2478/s11772-008-0013-4

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Three new pure antiferroelectric materials, synthesized at the Military University of Technology (MUT), were investigated by dielectric means. Clear relaxation modes were detected, i.e., Soft, Goldstone, low frequency in-phase (P-L) as well high frequency anti-phase (P-H) modes for paraelectric Sm A*phase, ferroelectric Sm C* phase and antiferroelectric Sm C-A* phase, respectively. Additionally, a high relaxation mode in Sm C-A* was found. The relaxation frequencies f(R) of the observed modes were calculated from Cole-Cole diagrams.

引用

页码：277 / 280

页数：4

共 4 条

[1]

[Anonymous], 2003, RELAXATION PHENOMENA

[2]

Lagerwall ST., 1999, FERROELECTRIC ANTIFE

[3] New high frequency dielectric mode in fluorinated Antiferroelecteric Liquid Crystals [J].

Perkowski, P. ;

Piecek, W. ;

Raszewski, Z. ;

Ogrodnik, K. ;

Rutkowska, J. ;

Zurowska, M. ;

Dabrowski, R. ;

Kedzierski, J. ;

Sun, X. .

FERROELECTRICS, 2008, 365 :246-+

[4] Dielectric spectroscopy of the fluorinated AFLC's and their protonated analogs [J].

Rutkowska, J. ;

Perkowski, P. ;

Piecek, W. ;

Kedzierski, J. ;

Raszewski, Z. ;

Zielinski, J. .

FERROELECTRICS, 2006, 343 :151-160

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