PIEZOELECTRIC RESONANCE STUDY OF STRUCTURAL PHASE-TRANSITIONS IN BAMNF4

被引：2
|
作者：
HIDAKA, M
NODA, A
YASMASHITA, S
IMANAGA, K
MAKI, K
OHMURA, T
机构：
[1] KYUSHU UNIV 33,DEPT PHYS,FUKUOKA 812,JAPAN
[2] OITA UNIV,FAC EDUC,OITA 87011,JAPAN
来源：
PHASE TRANSITIONS | 1990年 / 28卷 / 1-4期
关键词：
PIEZOELECTRIC RESONANCE BAMNF4 STRUCTURAL MODULATION;
D O I：
10.1080/01411599008207935
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Structural transitions of BaMnF4 are studied by piezoelectric resonance. The results show that large structural modulations occur from 220 K to 250 K. It is found from the temperature-dependence of the resonance curves that successive phase transitions appear at about 226 K, 234 K and 244 K. The inconsistency of the transition temperature from a A21 am to an incommensurate phase is interpreted as intrinsic structural instability, but not by defects or impurities in the crystal of BaMnF4 used. © 1990, Taylor & Francis Group, LLC. All rights reserved.
引用
收藏
页码：107 / 123
页数：17
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