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Processing of Superconducting Ceramics Using Microwave Energy

Published online by Cambridge University Press:  21 February 2011

Iftikhar Ahmad,
G. T. Chandler and
D. E. Clark
Iftikhar Ahmad
Affiliation:
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611
G. T. Chandler
Affiliation:
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611
D. E. Clark
Affiliation:
Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611
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Abstract

Superconducting ceramics have been successfully prepared employing a novel internal heating mechanism which uses microwave energy. Calcining with microwaves requires further investigation to improve the superconducting properties. Sintering and annealing in microwave energy shows refined microstructure and improved oxygen content in the YBa2Cu3O7-x phase. This is attributed to the coupling of CuO with microwave energy. The onset of the superconductive transition occurs at 93°K for the conventionally calcined/microwave annealed samples. The conventionally processed samples have an onset transition at 90°K and exhibit weaker diamagnetism when compared with the microwave annealed sample.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 124: Symposium M – Microwave Processing of Materials I , 1988, 239
Copyright
Copyright © Materials Research Society 1988

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References

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