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Significantly Enhanced Flux-Pinning in Y-Ba-Cu-O by Simple Processing

Published online by Cambridge University Press:  28 February 2011

S. Jin ,
T. H. Tiefel ,
S. Nakahara ,
J. E. Graebner ,
H. M. O'Bryan ,
R. A. Fastnacht  and
G. W. Kammlott
S. Jin
Affiliation:
AT&T Bell LaboratoriesMurray Hill, NJ 07974
T. H. Tiefel
Affiliation:
AT&T Bell LaboratoriesMurray Hill, NJ 07974
S. Nakahara
Affiliation:
AT&T Bell LaboratoriesMurray Hill, NJ 07974
J. E. Graebner
Affiliation:
AT&T Bell LaboratoriesMurray Hill, NJ 07974
H. M. O'Bryan
Affiliation:
AT&T Bell LaboratoriesMurray Hill, NJ 07974
R. A. Fastnacht
Affiliation:
AT&T Bell LaboratoriesMurray Hill, NJ 07974
G. W. Kammlott
Affiliation:
AT&T Bell LaboratoriesMurray Hill, NJ 07974
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Abstract

Significantly improved flux-pinning has been achieved in bulk YBa2Cu3O7-δ superconductor (‘123’ compound) containing fine-scale defects (<~50 A thick). The measured Jc(magn.) of ~l05 A/cm2 at 77K, H = 0.9T is about ten times higher than the typical values for bulk Y-Ba-Cu-O. The improved structure was produced by rapid decomposition at 920°C of the YBa2Cu4O8 (‘124’) precursor.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 919
Copyright
Copyright © Materials Research Society 1990

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References

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