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Critical Current Density, Flux Creep, and Microstructure in A Bi-Sr-Ca-Cu-O System*

Published online by Cambridge University Press:  28 February 2011

Donglu Shi ,
M. S. Boley ,
J. G. Chen ,
Ming Xu ,
M. M. Fang ,
U. Welp ,
K. Vandervoort  and
J. M. Hong
Donglu Shi
Affiliation:
Work supported by the U. S. Department of Energy, BES-Materials Science, under Contract No. W–31–109–ENG–38.
M. S. Boley
Affiliation:
Work supported by the U. S. Department of Energy, BES-Materials Science, under Contract No. W–31–109–ENG–38.
J. G. Chen
Affiliation:
Work supported by the U. S. Department of Energy, BES-Materials Science, under Contract No. W–31–109–ENG–38.
Ming Xu
Affiliation:
Work supported by the U. S. Department of Energy, BES-Materials Science, under Contract No. W–31–109–ENG–38.
M. M. Fang
Affiliation:
Work supported by the U. S. Department of Energy, BES-Materials Science, under Contract No. W–31–109–ENG–38.
U. Welp
Affiliation:
Work supported by the U. S. Department of Energy, BES-Materials Science, under Contract No. W–31–109–ENG–38.
K. Vandervoort
Affiliation:
Work supported by the U. S. Department of Energy, BES-Materials Science, under Contract No. W–31–109–ENG–38.
J. M. Hong
Affiliation:
Work supported by the U. S. Department of Energy, BES-Materials Science, under Contract No. W–31–109–ENG–38.
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Abstract

We measured magnetization hysteresis and zero-field-cooled magnetic relaxation for liquid-quenched Bi-Sr-Ca-Cu-O samples at various temperatures. We found that there is a close correlation between the magnetic behavior and the microstructures of the samples. The magnetization hysteresis greatly increases in the samples with a large amount of crystal defects such as precipitates and stacking faults in the matrix of the material. We also found that the flux creep is reduced as a result of these microstructural changes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 959
Copyright
Copyright © Materials Research Society 1990

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Footnotes

*

Work supported by the U. S. Department of Energy, BES-Materials Science, under Contract No. W-31-109-ENG-38.

References

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