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Melt Processing of Bi-Ca-Sr-Cu-O Superconductors

Published online by Cambridge University Press:  28 February 2011

J.P. Cronin
Affiliation:
Arizona Materials Laboratories, The University of Arizona, Tucson, AZ 85712
A. Aruchamy
Affiliation:
Arizona Materials Laboratories, The University of Arizona, Tucson, AZ 85712
S. Rosenfelder
Affiliation:
Arizona Materials Laboratories, The University of Arizona, Tucson, AZ 85712
S.-J. Kim
Affiliation:
Arizona Materials Laboratories, The University of Arizona, Tucson, AZ 85712
D.R. Uhlmann
Affiliation:
Arizona Materials Laboratories, The University of Arizona, Tucson, AZ 85712
O.H. El-Bayoumi
Affiliation:
Solid State Sciences Directorate, Rome Air Development Center, Hanscom Air Force Base, Bedford, MA 01731
R.J. Andrews
Affiliation:
Solid State Sciences Directorate, Rome Air Development Center, Hanscom Air Force Base, Bedford, MA 01731
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Abstract

Unidirectional crystallization of melt processed 2122 and 2223 composition in the Bi-Ca-Sr-Cu-O system has been carried out. Crystallization was controlled by heating the glass or cooling the melt using a moving furnace and a stationary sample. Fairly large oriented crystalline specimens of 2122 phases were obtained by cooling from the melt in a shallow gradient furnace. Glassy samples processed under steep gradients showed better crystallinity than those processed under shallow gradients.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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