Hostname: page-component-77c89778f8-5wvtr Total loading time: 0 Render date: 2024-07-19T07:33:47.383Z Has data issue: false hasContentIssue false
  • English
  • Français

Exafs Study of (La1-XCex)2Zr207

Published online by Cambridge University Press:  15 February 2011

Hiroto Yokoi ,
Tsuneo Matsui ,
Hideo Ohno  and
Katsumi Kobayashi
Hiroto Yokoi
Affiliation:
Department of Nuclear Engineering, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464–01, Japan.
Tsuneo Matsui
Affiliation:
Department of Nuclear Engineering, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464–01, Japan.
Hideo Ohno
Affiliation:
Office of Synchrotron Radiation Facility Project, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319–11, Japan.
Katsumi Kobayashi
Affiliation:
Photon Factory, National Laboratory for High Energy Physics, Tsukuba, Ibaraki 305, Japan.
Get access

Abstract

The local structures around Zr atoms such as coordination number of oxygen and cations, and the Zr-0 and Zr-Ln (Ln; La, Ce) interatomic distances in the (La1-xCex).2Zr2O7 Pyrochlore compounds (X = 0–0.25), where Ce is a simulation of actinides,were studied by means of extended X-ray absorption fine structure (EXAFS) spectrometry. The local structure determined by EXAFS in this study is discussed in relation to the dissolution behavior of (La1-xCex)2Zr207 (leaching rates of Zr, La and Ce) in an acid solution (pH=1) at 363K reported previously. The difference in the local structure before and after leaching test was also investigated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 783
Copyright
Copyright © Materials Research Society 1995

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. Hayakawa, I. and Kamizono, H., J. Mater. Sci. 28, 513 (1993).Google Scholar
2. Hayakawa, I. and Kamizono, H., J. Nucl. Mater. 202, 163 (1993).Google Scholar
3. Muromura, T. and Hinatsu, Y., J. Nucl. Mater. 151, 55 (1987).Google Scholar
4. Hayakawa, I. and Kamizono, H., Mat. Res. Soc. Symp. Proc. 257, 257 (1992).Google Scholar
5. Uehara, T., Kato, K., Emura, S. and Kanamaru, F., Solid State Ionics 23, 331 (1987).Google Scholar
6. Subramanian, M. A., Aravamudan, G. and Subba Rao, G. V., Prog. Solid St. Chem. 15, 55 (1983).Google Scholar
7. Teo, B. K. and Lee, P. A., J. Am. Chem. Soc. 101, 2815 (1979).Google Scholar
8. Chakoumakos, B., J. Solid State Chem. 53, 120(1984).Google Scholar
9. Mazzl, F. and Munno, R., Am. Miner. 68, 262 (1983).Google Scholar
10. White, T. J., ibid. 69, 1156 (1984).Google Scholar
11. Petit, C., Kaddouri, A., Libs, S., Kiennemann, A., Rehspringer, J. L. and Poix, P., J. Catalysis 140, 328 (1993).Google Scholar