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The effect of oxygen partial pressure on the formation of (Bi, Pb)2Sr2Ca2Cu3O10−x

Published online by Cambridge University Press:  29 June 2016

Wen Zhu
Affiliation:
Ceramic Engineering Research Group, Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, L8S 4L7, Canada
Patrick S. Nicholson
Affiliation:
Ceramic Engineering Research Group, Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, L8S 4L7, Canada
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Abstract

The effect of atmosphere on the formation of the 110 K (Bi2Sr2Ca2Cu3O10, 2223) superconductor phase was studied at different oxygen partial pressures and temperatures. Step heating at low oxygen partial pressures with intermediate grinding promoted 110 K phase formation. With this synergy the shortest time for single-phase 110 K superconductor formation was found to be 12 h between 845 and 865°C at Po2 = 0.078 atmosphere. The activation energy of 110 K phase formation is 1513 KJ/mole in air.

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Articles
Copyright
Copyright © Materials Research Society 1992

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References

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