X-ray, dielectric and high pressure studies on a compound exhibiting ferro-, ferri- and antiferroelectric smectic phases

被引：18

作者：

Rao, DSS

Prasad, SK

Chandrasekhar, S

Mery, S

Shashidhar, R

机构：

[1] CTR LIQUID CRYSTAL RES, BANGALORE 560013, KARNATAKA, INDIA

[2] INST PHYS & CHIM MAT STRASBOURG, GMO, F-67037 STRASBOURG, FRANCE

[3] USN, RES LAB, CTR BIOMOL SCI & ENGN, WASHINGTON, DC 20375 USA

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1997年 / 292卷

关键词：

ferroelectric; ferrielectric; antiferroelectric; smectics; x-ray; dielectric constant; high pressure studies; pressure temperature phase diagram; critical end point;

D O I：

10.1080/10587259708031939

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We report X-ray layer spacing, dielectric constant and high pressure measurements on a compound that exhibits the following sequence of phase transitions: smectic A-ferroelectric smectic C*-ferrielectric smectic C-gamma*-antiferroelectric smectic C-A*-hexatic antiferroelectric smectic I-A*-crystal K. The pressure-temperature diagram shows two three-phase meeting points, which are topologically consistent with critical end points, and reentrant behavior of the C* and C-7* phases as the pressure is varied at constant temperature.

引用

收藏

页码：301 / 310

页数：10

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