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Texturing Crystal Growth in Vertical Thermal Gradients

Published online by Cambridge University Press:  28 February 2011

N. X. Tan ,
A. J. Bourdillon  and
N. Sawides
N. X. Tan
Affiliation:
Department of Materials Science and Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794
A. J. Bourdillon
Affiliation:
Department of Materials Science and Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794
N. Sawides
Affiliation:
CSIRO Division of Applied Physics, NSW 2070, Australia
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Abstract

Texture growth in incongruently melting ceramic superconductor materials, such as YBa2Cu3O7‐χ can be combined with zone refinement in thermal gradients to increase critical current densities. In gravity aided texture growth (GATEG), a vertical thermal gradient is used with downward motion of the partially molten specimen (relative to the furnace) so that the molten phase recrystallizes with grain growth. The oxidation features of Y‐Ba‐Cu‐0 and Bi‐Sr‐Ca‐Cu‐0 can be explained by Madelung potentials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 283
Copyright
Copyright © Materials Research Society 1990

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