Mössbauer and X-ray Diffraction Studies of Cubic Solid Solutions of the ZrO2−Y2O3−Fe2O3 System

The effect of iron oxide on the polymorphic composition and thin structure of cubic solid solutions of the (ZrO2)0.9(Y2O3)0.1- x (Fe2O3) x system has been investigated. The maximum Fe2O3 solubility in the studied cut of the ternary system has been determined to be 2 mol %. Iron exists only as Fe3+ i...

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Bibliographic Details
Published in:Journal of physical chemistry. C 2008-03, Vol.112 (10), p.3914-3919
Main Authors: Belous, A. G, Pashkova, E. V, Kravchyk, K. V, Ivanitskii, V. P, V'yunov, O. I
Format: Article
Language:English
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Summary:The effect of iron oxide on the polymorphic composition and thin structure of cubic solid solutions of the (ZrO2)0.9(Y2O3)0.1- x (Fe2O3) x system has been investigated. The maximum Fe2O3 solubility in the studied cut of the ternary system has been determined to be 2 mol %. Iron exists only as Fe3+ ions in octahedral co-ordination. Three nonequivalent positions of the Fe3+ ions, which differ in surrounding cations and anions, have been identified. It has been shown that Fe2O3 is not a stabilizer of the high-temperature modifications of ZrO2, but it promotes the stabilizing action (efficiency) of Y2O3 and structure stability in time due to the formation of the compound YFeO3 with structure isomorphic to c-ZrO2.
ISSN:1932-7447
1932-7455
DOI:10.1021/jp7102148