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Critical Current Density of the YBa2Cu3O7-δ Superconductor as Affected by Microstructuralxontrol

Published online by Cambridge University Press:  28 February 2011

S. Jin,
R. C Sherwood,
T. H. Tiefel,
R. B. van Dover,
G. W. Kammlott,
M. E. Davis,
R. A. Fastnacht,
S. Nakahara,
M. F. Yan and
D. W. Johnson Jr
S. Jin
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
R. C Sherwood
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
T. H. Tiefel
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
R. B. van Dover
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
G. W. Kammlott
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
M. E. Davis
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
R. A. Fastnacht
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
S. Nakahara
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
M. F. Yan
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
D. W. Johnson Jr
Affiliation:
AT&T Bell Laboratories, Murray Hill, NJ 07974
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Abstract

The recent discovery of the YBa2Cu3O7-δ type high Tc superconductors stimulated worldwide R&D interest in this field. However, the relatively low critical current density (Jc) in the polycrystalline, bulk superconductors (as well as its significant deterioration in weak magnetic fields) has been a major roadblock to the rapid technical advancement toward applications. In this paper, we investigated the effect of processing and microstructural control on Jc of the superconductor. Improved Jc values of -3100 A/cm2 at 77K with somewhat reduced field dependence have been obtained through appropriate microstructural modifications.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987, 773
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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