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A systematic study of the synthesis of useful Tl2Ba2Ca2Cu3O10−δ bulk superconductor

Published online by Cambridge University Press:  03 March 2011

Y. Xin ,
B.R. Xu ,
S. Nasrazadani ,
W.S. He ,
D.F. Lu ,
G.F. Sun ,
K.W. Wong  and
D. Knapp
Y. Xin
Affiliation:
Midwest Superconductivity, Inc., Lawrence, Kansas 66049
B.R. Xu
Affiliation:
Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045
S. Nasrazadani
Affiliation:
Department of Mechanical Engineering, University of Arkansas, Fayetteville, Arkansas 72701
W.S. He
Affiliation:
Midwest Superconductivity, Inc., Lawrence, Kansas 66049
D.F. Lu
Affiliation:
Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045
G.F. Sun
Affiliation:
Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045
K.W. Wong
Affiliation:
Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045
D. Knapp
Affiliation:
Midwest Superconductivity, Inc., Lawrence, Kansas 66049
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Abstract

A method to synthesize high density Tl2Ba2Ca2Cu3O10−δ bulk superconductor with uniformity from presintered powder of the 2223 phase material was developed. With a proper annealing process, the transport critical current density and the material density of such a synthesized superconductor are much improved over those of the starting material. The critical temperature and phase purity of this material are also enhanced. In this paper, we report our systematic study on some basic parameters of this material, including the normal state resistivity, Tc, Jc, phase purity, and morphology produced under different annealing conditions. An optimum preparation technique is then derived.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 7 , July 1994 , pp. 1672 - 1677
Copyright
Copyright © Materials Research Society 1994

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References

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