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

  • C. T. Wang (a1), L. S. Lin (a1), J. H. Lin (a1), J. Y. Su (a1), S. J. Yang (a1) and S. E. Hsu (a1)...

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.

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

  • C. T. Wang (a1), L. S. Lin (a1), J. H. Lin (a1), J. Y. Su (a1), S. J. Yang (a1) and S. E. Hsu (a1)...

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