EFFECT OF HYDROSTATIC-PRESSURE ON THE NORMAL-INCOMMENSURATE-FERROELECTRIC PHASE-TRANSITIONS IN RB2COCL4 AND RB2COBR4

被引：9

作者：

GESI, K

机构：

[1] Department of Materials Science, College of Science and Engineering, Iwaki Meisei University, Iwaki, Fukushima 970, 5-5-1 Iino, Chuodai

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1990年 / 59卷 / 05期

关键词：

D O I：

10.1143/JPSJ.59.1841

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Effect of hydrostatic pressure has been studied for the normal-incommensurate-ferroelectric phase transitions in two isotropic ferroelectric crystals, Rb2CoCl4 and Rb2CoBr4. The pressure coefficients of the normal-incommensurate transition temperature, dTi/dp, are -12 K/GPa for Rb2CoCl4 and +39 K/GPa for Rb2CoBr4. The initial pressure coefficients of the incommensurate-ferroelectric transition temperature, (dTc/dp)0, are -70 K/GPa and -52 K/GPa for Rb2CoCl4 and Rb2CoBr4, respectively. The results are compared with those of other K2SeO4-type ferroelectrics obtained so far, and discussed. © 1990, The Physical Society of Japan. All rights reserved.

引用

页码：1841 / 1847

页数：7

共 18 条

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