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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.
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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

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References

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