ULTRASONIC INVESTIGATIONS OF PHASE-TRANSITIONS IN HIGH-TC SUPERCONDUCTORS

被引：17
|
作者：
MULLER, V
MAURER, D
机构：
[1] Freie Universität Berlin, Fachbereich Physik, D-1000 Berlin 33, FRG
来源：
PHASE TRANSITIONS | 1990年 / 22卷 / 1-4期
关键词：
ferroelasticity; High temperature superconductors; phase transitions; twins; ultrasound;
D O I：
10.1080/01411599008207225
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
We report on the temperature dependence of the sound velocity and ultrasonic absorption in YBa2 Cu3 O7- δ and discuss what can be learned from these measurements about possible low-temperature phase-transitions. In particular the formation of microtwins is considered as a precursor of a stress-induced first-order displacive transition into a possibly piezoelectric phase. © 1990, Taylor & Francis Group, LLC. All rights reserved.
引用
收藏
页码：211 / 224
页数：14
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