Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-14T17:18:22.525Z Has data issue: false hasContentIssue false
  • English
  • Français

Mechanism of Cation Doping by the Soed 2 Method

Published online by Cambridge University Press:  10 February 2011

K. Kamada  and
Y. Matsumoto
K. Kamada
Affiliation:
Department of Applied Chemistry, Faculty of Engineering, Kumamoto University, Kurokami 2-39-1, Kumamoto 860-8555, Japan
Y. Matsumoto
Affiliation:
Department of Applied Chemistry, Faculty of Engineering, Kumamoto University, Kurokami 2-39-1, Kumamoto 860-8555, Japan
Get access

Abstract

Electrochemical cation doping into the YBCO ceramics has been carried out using SOED 2 method (electro-bi-injection). The SOED 2 method consists of the Anode/M-β”-A1203/Ceramics/YSZ/Cathode electrolysis system, where the metal cation M and oxygen anion are simultaneously injected into the oxide ceramics so that electrical neutrality is maintained in the ceramics. YBa2Cu3Oy superconductor was used as the ceramics to be doped. In general, graded doping occurred at a relatively high temperature, because the migration rate of the oxygen anion is close to that of the metal cation in the grain boundaries of the ceramics at high temperature. As a result, the metal cation was graded on the anode side of the YBCO ceramics. The doping situation depended on the electrolysis temperature, the valence of the doped cation. The mechanism of the electro-bi-injection is discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 548: Symposia EE – Solid State Ionics V , 1998 , 473
Copyright
Copyright © Materials Research Society 1999

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

REFERENCES

1. Matsumoto, Y., Koinuma, M., Yamamoto, H., Nishimori, T., Solid State Ionics 95, 309 (1997).Google Scholar
2. Matsumoto, Y., Nishimori, T., Yamamoto, H., Nishimura, K., Kamada, K., Ogata, A., Solid State Ionics 107, 41 (1998).Google Scholar
3. Matsumoto, Y., J. Solid State Chem. 128, 93 (1997).Google Scholar
4. Matsumoto, Y., Solid State Ionics 100, 165 (1997).Google Scholar
5. Whittingham, M. S., Huggins, R. A., J. Electrochem. Soc. 118, 1 (1971).Google Scholar
6. Farrington, G. C., Dunn, B., Solid State Ionics 7, 267 (1982).Google Scholar
7. Breiter, M., Schreiber, M. M., Dunn, B., Solid State Ionics 18–19, 658 (1986).Google Scholar
8. Gupta, D., Laibowitz, R. B., Lacey, J. A., Phys. Rev. Lett. 64, 2675 (1990).Google Scholar
9. Rothman, S. J., Routbart, J. L., Baker, J. E., Phys. Rev. B 40, 8852 (1989).Google Scholar
10. Briant, J. L., Farrington, G. C., J. Solid State Chem. 33, 385 (1980).Google Scholar