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Comparison of Barium Carbonate and Nitrate Used in the Preparation of YBa2Cu3O7-x Superconductors

Published online by Cambridge University Press:  28 February 2011

Phillip G. Wahlbeck ,
Dwight L. Myers  and
R. Ronald Richards
Phillip G. Wahlbeck
Affiliation:
Department of Chemistry and the Institute for Aviation Research The Wichita State University, Wichita, KS 67208
Dwight L. Myers
Affiliation:
Department of Chemistry and the Institute for Aviation Research The Wichita State University, Wichita, KS 67208
R. Ronald Richards
Affiliation:
Department of Chemistry and the Institute for Aviation Research The Wichita State University, Wichita, KS 67208
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Abstract

Samples of YBa2Cu3O7-x were prepared by the solid state reaction method using Y2O3, CuO, and either BaCO3 or Ba(NO3)2. The samples were studied using DTA-TGA, Knudsen cell mass spectrometry, and SEM-EDAX. The results indicated that C was more abundant in samples prepared from the carbonate than from the nitrate. In both samples, C was more abundant than N which was at low levels in both samples. Knudsen cell mass spectrometry has proven to be an experimental technique which is sensitive to volatile impurities at low levels.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 377
Copyright
Copyright © Materials Research Society 1990

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References

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