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YBa2Cu3O7-δ Superconductors Produced by Hot-Pressing of Freeze-Dried, Carbonate- and Oxalate-Coprecipitated Powders

Published online by Cambridge University Press:  28 February 2011

C. T. Wang ,
L. S. Lin ,
J. H. Lin ,
J. Y. Su ,
S. J. Yang  and
S. E. Hsu
C. T. Wang
Affiliation:
Materials R&D Center, Chung Shan Institute of Science and Technology, Lungtan, Taiwan, 32500, Republic of China
L. S. Lin
Affiliation:
Materials R&D Center, Chung Shan Institute of Science and Technology, Lungtan, Taiwan, 32500, Republic of China
J. H. Lin
Affiliation:
Materials R&D Center, Chung Shan Institute of Science and Technology, Lungtan, Taiwan, 32500, Republic of China
J. Y. Su
Affiliation:
Materials R&D Center, Chung Shan Institute of Science and Technology, Lungtan, Taiwan, 32500, Republic of China
S. J. Yang
Affiliation:
Materials R&D Center, Chung Shan Institute of Science and Technology, Lungtan, Taiwan, 32500, Republic of China
S. E. Hsu
Affiliation:
Materials R&D Center, Chung Shan Institute of Science and Technology, Lungtan, Taiwan, 32500, Republic of China
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Abstract

Reactive YBa2Cu3O7-δ powders have been produced via freeze-drying, carbonate- and oxalate-coprecipitating methods. In the coprecipitating methods, sodium carbonate and sodium oxalate were used as precipitants. These powders were characterized by TGA, XRD, and SEM. The morphologies of the YBa2Cu3O7-δ powders produced from these methods are different from each other. The influence of hot-press process on the bulk density, micro-structure development and superconducting properties of YBa2Cu3O7-δ samples was also studied.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 257
Copyright
Copyright © Materials Research Society 1988

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References

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