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.

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页码：211 / 224

页数：14

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