DIELECTRIC BEHAVIOR OF THE NEW FERROELECTRIC (CH3NH3)5BI2BR11 IN THE MICROWAVE REGION

被引：25

作者：

PAWLACZYK, C

MOTSCH, H

JAKUBAS, R

UNRUH, HG

机构：

[1] UNIV SAARLAND,FACHBEREICH PHYS,W-6600 SAARBRUCKEN,GERMANY

[2] WROCLAW B BEIRUT UNIV,INST CHEM,PL-50137 WROCLAW,POLAND

来源：

FERROELECTRICS | 1990年 / 108卷

关键词：

D O I：

10.1080/00150199008018744

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low frequency dielectric measurements reveal two phase transitions in (CH3NH3)5Bi2Br11: at 311.5 K and 80 K. In the very vicinity of the ferroelectric phase transition at Tc = 311.5 K a nearly perfect Debye relaxation in the MHz region, with a critical slowing down of the relaxation frequency fε = 1/2πτε, has been found. Well-marked deviations from this behavior in the GHz range can be interpreted as the influence of another relaxational contribution to the permittivity. © 1990, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：127 / 132

页数：6

共 9 条

[1]

JAKUBAS B, 1989, IN PRESS FERROELECTR

[2] A NEW FERROELECTRIC COMPOUND - (CH3NH3)5BI2BR11 [J].