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Epr of Fe3+ and Cr3+ Ions in NZP Ceramics

Published online by Cambridge University Press:  10 February 2011

A. Y. Troole ,
S. V. Stefanovsky  and
L. D. Bogomolova
A. Y. Troole
Affiliation:
SIA “Radon”, 7th Rostovskii per., 2/14, Moscow 119121 Russia;
S. V. Stefanovsky
Affiliation:
SIA “Radon”, 7th Rostovskii per., 2/14, Moscow 119121 Russia;
L. D. Bogomolova
Affiliation:
Institute of Nuclear Physics of Moscow State University, Vorobyovy gory, Moscow, Russia.
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Abstract

A new method to estimate the thermodynamic stability of crystalline host phases for radwaste is based on the determination of the degree of coordination polyhedra distortion. Analysis of the stability of sodium zirconium phosphate (NZP) structure containing Fe and Cr has been completed. The NZP structure can incorporate a limited amount of iron (∼2 mol. % Fe2o3). From the EPR study, Fe3+ and Cr3+ ions occupy two different structural positions substituting for Zr4+and Na+. Moreover, these ions can enter extra phases.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 556: Symposium QQ – Scientific Basis for Nuclear Waste Management XXII , 1999 , 99
Copyright
Copyright © Materials Research Society 1999

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