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Bulk YBa2Cu3Ox superconductors through pressurized partial melt growth processing

Published online by Cambridge University Press:  31 January 2011

S. Hu ,
H. Hojaji ,
A. Barkatt ,
M. Boroomand ,
M. Hung ,
A.C. Buechele ,
A.N. Thorpe ,
D.D. Davis  and
S. Alterescu
S. Hu
Affiliation:
The Catholic University of America, Washington, DC 20064
H. Hojaji
Affiliation:
The Catholic University of America, Washington, DC 20064
A. Barkatt
Affiliation:
The Catholic University of America, Washington, DC 20064
M. Boroomand
Affiliation:
The Catholic University of America, Washington, DC 20064
M. Hung
Affiliation:
The Catholic University of America, Washington, DC 20064
A.C. Buechele
Affiliation:
The Catholic University of America, Washington, DC 20064
A.N. Thorpe
Affiliation:
Howard University, Washington, DC 20059
D.D. Davis
Affiliation:
Howard University, Washington, DC 20059
S. Alterescu
Affiliation:
NASA Goddard Space Flight Center, Greenbelt, Maryland 20770
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Abstract

We have developed a novel pressurized partial melt growth process for producing large pieces of bulk Y–Ba–Cu–O superconductors. During long-time partial melt growth stage, an additional driving force for solidification is obtained by using pressurized oxygen gas. The microstructure and superconducting properties of the resulting samples were investigated. It was found that this new technique can eliminate porosity and inhomogeneity, promote large-scale grain-texturing, and improve interdomain coupling as well.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 4 , April 1992 , pp. 808 - 812
Copyright
Copyright © Materials Research Society 1992

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