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Critical Current Density Enhancement and Moisture Destruction Studies of the Compound Superconductor Y-Ba-Cu-Ag-O*

Published online by Cambridge University Press:  28 February 2011

Y. D. Yao ,
A. Krol ,
Y. H. Krol ,
C. Walters ,
S. Spagna ,
J. Althoff ,
S. Woronick ,
L. Y. Jang  and
F. Xu
Y. D. Yao
Affiliation:
Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y. 11794
A. Krol
Affiliation:
Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y. 11794
Y. H. Krol
Affiliation:
Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y. 11794
C. Walters
Affiliation:
Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y. 11794
S. Spagna
Affiliation:
Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y. 11794
J. Althoff
Affiliation:
Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y. 11794
S. Woronick
Affiliation:
Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y. 11794
L. Y. Jang
Affiliation:
Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y. 11794
F. Xu
Affiliation:
Department of Physics, State University of New York at Stony Brook, Stony Brook, N. Y. 11794
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Abstract

We have fabricated a series of samples of YBa2(Cu1−x Agx)3Oy compounds where 0 ≤ × ≤ 1, with the intention to study the changes in critical current density and the effect of moisture treatment on normal state resistance R in these high transition-temperature superconductors. The samples exhibited a decrease of the transition-temperature Tc vs the Ag concentration x. Tc is about 93 K for YBa2Cu3Oy and 20 KCfor YBa2Ag3Oy, but it is almost unaffected by the presence or Ag for × < 0.2. An enhancement of the critical current density Jc by nearly an order of magnitude for the samples with 0 < × ≤ 0.1 has been observed. Both Jc and R are found to be sensitive to the ambient moisture conditions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 407
Copyright
Copyright © Materials Research Society 1988

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Footnotes

+

On leave from Institute of Physics, Academia Sinica, Taipei, Taiwan

*

This research is supported in part by U. S. Department of Energy under grant No. DE-FG02–87ER4.5283.

References

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