Ultrasonic investigations of phase transitions in high-Tcsuperconductors
- 1 June 1990
- journal article
- research article
- Published by Taylor & Francis in Phase Transitions
- Vol. 22 (1-4) , 211-224
- https://doi.org/10.1080/01411599008207225
Abstract
We report on the temperature dependence of the sound velocity and ultrasonic absorption in YBa2Cu3O7-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.Keywords
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