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Fabrication of YBa2Cu3O7−x superconducting bulk with aligned microstructure by sintering technique

Published online by Cambridge University Press:  31 January 2011

S.R. Su ,
M. O'Connor  and
M. Levinson
S.R. Su
Affiliation:
GTE Laboratories Incorporated, 40 Sylvan Road, Waltham, Massachusetts 02254
M. O'Connor
Affiliation:
GTE Laboratories Incorporated, 40 Sylvan Road, Waltham, Massachusetts 02254
M. Levinson
Affiliation:
GTE Laboratories Incorporated, 40 Sylvan Road, Waltham, Massachusetts 02254
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Abstract

By controlling the pH of mixed nitrate solutions, we have produced single-phase YBa2Cu3O7−x platelet particles with an average size of 2.5 μm. The kinetics of superconducting phase formation and the thermal properties of the related phases were systematically studied. Through this understanding, we have developed sintering techniques which produce YBa2Cu3O7−x with wide areas of highly aligned grains at 1010 °C. By incorporating aligned microsized particles into the matrix of this reactive precursor powder as nucleation sites, samples with large randomly oriented domains can be formed at 980 °C.

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Articles
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Journal of Materials Research , Volume 6 , Issue 2 , February 1991 , pp. 244 - 251
Copyright
Copyright © Materials Research Society 1991

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