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Oxygen Evolution from Yba2cu3o7‐δ Superconducting Powders Generated by Aerosol Routes

Published online by Cambridge University Press:  28 February 2011

Pratim Biswas ,
Derong Zhoul ,
Jeff Grothaus ,
Punit Boolchand  and
Darl McDaniel
Pratim Biswas
Affiliation:
Department of Civil and Environmental Engineering,
Derong Zhoul
Affiliation:
Department of Civil and Environmental Engineering,
Jeff Grothaus
Affiliation:
procter and Gamble,
Punit Boolchand
Affiliation:
Department of Electrical and Computer Engineering and Physics,
Darl McDaniel
Affiliation:
Department of Chemistry; University of Cincinnati; Cincinnati, Ohio 45221‐0071.
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Abstract

The oxygen desorption kinetics of the YBa2Cu3O7‐δ powders generated by an aerosol route was investigated and compared to that of solid state reacted powders. The oxygen content of the aerosol sample was determined using a thermogravimetric analyzer (at 990 C) and wet chemical methods, and δ was calculated to be ‐0.1. The activation energy and pre‐exponential factor were determined by regression for two peaks at 540 C and 850 C. Other activation parameters were also calculated. The calculated values of these parameters for aerosol samples and those reported for solid state reacted powders are in good agreement.

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References

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