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Irradiation Effect of Slow Neutrons on Mechanical Behaviour Related to Flux Pinning In YBa2Cu3Oy

Published online by Cambridge University Press:  28 February 2011

J. S. Zhu ,
J. Li ,
Y. N. Wang ,
J. R. Jin ,
M. Gu ,
S. Y. Ding ,
X. Jin ,
P. C. W. Fung  and
Z. M. Liu
J. S. Zhu
Affiliation:
National Lab. of Solid State Mierostructures and Dept. of Physics, Nanjing University, Nanjing 210008, China
J. Li
Affiliation:
National Lab. of Solid State Mierostructures and Dept. of Physics, Nanjing University, Nanjing 210008, China
Y. N. Wang
Affiliation:
National Lab. of Solid State Mierostructures and Dept. of Physics, Nanjing University, Nanjing 210008, China
J. R. Jin
Affiliation:
National Lab. of Solid State Mierostructures and Dept. of Physics, Nanjing University, Nanjing 210008, China
M. Gu
Affiliation:
National Lab. of Solid State Mierostructures and Dept. of Physics, Nanjing University, Nanjing 210008, China
S. Y. Ding
Affiliation:
National Lab. of Solid State Mierostructures and Dept. of Physics, Nanjing University, Nanjing 210008, China
X. Jin
Affiliation:
National Lab. of Solid State Mierostructures and Dept. of Physics, Nanjing University, Nanjing 210008, China
P. C. W. Fung
Affiliation:
Dept. of Physics. Hong Kong University, Hong Kong
Z. M. Liu
Affiliation:
Dept. of Physics. Hong Kong University, Hong Kong
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Abstract

Internal friction and modulus in YBa2Cu3Oy, which are related to flux pinning, were examined by means of the vibrating reed technique before and after the slow neutron irradiation to different fluences. Both the decrease of mechanical dissipation and the increase of the modulus associated with strongly enhanced flux pinning were observed in a sample irradiated up to a suitable fluence. However, a decrease of modulus and magnetic hysteresis loop was found after further irradiation. A change in the microstructure of the irradiated material is used to explain the observed phenomena.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 235: Symposium A – Phase Formation and Modification by Beam-Solid Interactions , 1991 , 689
Copyright
Copyright © Materials Research Society 1992

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References

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