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X-Ray Absorption and Resistivity Studies of the Quinary-Compound Superconductor Y-Ba-Cu-O-S

Published online by Cambridge University Press:  28 February 2011

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

A quinary-compound system consisting of Y, Ba, Cu, O, and S has been prepared in our laboratory. The nominal composition of Y, Ba, Cu, and O is similar to the well known material YBa2Cu3O7-y; the addition of S is intended to partially substitute the O sites. X-ray absorption measurements show that the lattice is distorted with the presence of S atoms. The transition temperature is found to decrease from 93K to about 77K with an increasing S content up to a S/Cu concentration ratio near 0.25; further increase of S results in unstable superconducting behavior and very broad resistive transition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 605
Copyright
Copyright © Materials Research Society 1988

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References

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