Hostname: page-component-848d4c4894-v5vhk Total loading time: 0 Render date: 2024-06-21T07:07:54.804Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of Small Deviations from Stoichiometry on Grain Boundary Compositions in YBa2Cu3O7-x

Published online by Cambridge University Press:  26 February 2011

D. M. Kroeger ,
J. Brynestad ,
R. K. Williams ,
R. A. Padgett  and
J. O. Scarbrough
D. M. Kroeger
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
J. Brynestad
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
R. K. Williams
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
R. A. Padgett
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
J. O. Scarbrough
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
Get access

Abstract

Comparison of Auger electron spectra for intergranular and transgranular areas on fracture surfaces of sintered YBa2Cu3O7-x indicates the presence of a grain-boundary layer which is copper-rich and oxygen-poor compared to the bulk. This layer is believed to be an important factor limiting the critical current density in sintered material. The composition of the grain-boundary layer is strongly affected by small changes in sample composition, as might be expected for a line compound. These small deviations from the stoichiometric composition also affect the critical current density and the electrical resistivity above the transition temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 122: Symposium I – Interfacial Structure, Properties, and Design , 1988 , 521
Copyright
Copyright © Materials Research Society 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCE

1. Kwak, J. F., Venturini, E. L., Ginley, D.S., and Fu, W. in Proc. of the International Workshop on Novel Mechanisms of Superconductivity, Berkeley, CA, June 22-26, 1987, eds. S. A. Wolf and V. Z. Kresin, Plenum Press, New York, 1987, pp. 983-91.Google Scholar
2. Noto, K., Watanabe, K., Morita, H., Murakami, Y., Yoshii, I., Sato, I., Sugawara, H., Kobayashi, N., Fujimori, H. and Muto, Y. in Proc. of the International Workshop on Novel Mechanisms of Superconductivity, Berkeley, CA, June 22-26, 1987, eds. S. A. Wolf and V. Z. Kresin, Plenum Press, New York, 1987, pp. 801-05.Google Scholar
3. Suenaga, M., Ghosh, A., Asano, T., Sabatini, R. L. and Moodenbaugh, A. R. in Proc. of Materials Research Society Symposium on High Temperature Superconductors, Anaheim, CA, April 1987, eds. D. U. Gubser and M. Schluter.Google Scholar
4. Campbell, A. M., to be published in Proc. of the 18th International Conference on Low Temperature Physics, Japanese J. Appl. Phys. 26 Supplement 26-3 (1987).Google Scholar
5. Kroeger, D. M., Choudhury, A., Brynestad, J., Williams, R. K., Padgett, R. A., and Coghlan, W. A., J. Appl. Phys. 63 (June 1988).Google Scholar