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Magnetic Relaxation in Bi2Sr2Ca1Cu2O8+x Single Crystal

Published online by Cambridge University Press:  28 February 2011

E. Agostinelli ,
G. Balestrino ,
D. Fiorani ,
P. Paroli ,
J. Tejada  and
A.M. Testa
E. Agostinelli
Affiliation:
I.T.S.E., C.N.R., Area della Ricerca, Roma, Italy
G. Balestrino
Affiliation:
Dept. of Physics, University of Salerno, Salerno, Italy
D. Fiorani
Affiliation:
I.T.S.E., C.N.R., Area della Ricerca, Roma, Italy
P. Paroli
Affiliation:
Dept. of Mechanical Engineering, University of Tor Vergata, Roma, Italy
J. Tejada
Affiliation:
Dep. de Fisica Fonamental, Universidad de Barcelona, Spain
A.M. Testa
Affiliation:
I.T.S.E., C.N.R., Area della Ricerca, Roma, Italy
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Abstract

The results of measurements of critical currents and magnetic relaxation on a Bi2 Sr2 Ca1 Cu2O8+x single crystal are reported. Activation energies for the flux motion have been determined from the temperature dependence of the critical current density and the time decay of the zero‐field‐cooled and the remanent magnetization. The effective activation energy increases with temperature, in agreement with the existence of a distribution of activation energies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 927
Copyright
Copyright © Materials Research Society 1990

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References

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