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Shape Memory Effect Due to Phaselike Transition in High Tc Superconductors

Published online by Cambridge University Press:  25 February 2011

Y.N. Wang ,
H.M. Shen ,
M. Zhu ,
Y.N. Huang ,
Z.F. Zhang ,
Z.M. Liu  and
P.C.W. Fung
Y.N. Wang
Affiliation:
Nantional Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, P. R. China.
H.M. Shen
Affiliation:
Nantional Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, P. R. China.
M. Zhu
Affiliation:
Nantional Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, P. R. China.
Y.N. Huang
Affiliation:
Nantional Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, P. R. China.
Z.F. Zhang
Affiliation:
Nantional Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, P. R. China.
Z.M. Liu
Affiliation:
Department of Physics, Hong Kong University, Hong Kong
P.C.W. Fung
Affiliation:
Department of Physics, Hong Kong University, Hong Kong
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Abstract

Tensil tests for YBaCuO, Bi(Pb)SrCaCuO and TiBaCaCuO show that there always appear ferroelastic loops and shape memory effect due to the phaselike transition at tens degrees above Tc (<150K), which disappear for nonsuperconducting YBaCuO, Y(Pr)BaCuO and CuO. The property of the phaselike transition and the discrepancy on the internal friction peaks near Tc for YBaCuO have been studied and discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 246: Symposium M – Shape-Memory Materials and Phenomena--Fundamental Aspects and Applications , 1991 , 207
Copyright
Copyright © Materials Research Society 1992

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