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The Agglomeration of Point Defects in Transition Metal Monoxides

Published online by Cambridge University Press:  26 February 2011

E. Gartstein,
M. Radler,
T. O. Mason and
J. B. Cohen
E. Gartstein
Affiliation:
Galai, Industrial Zone, 10500 Migcal Haemek, Israel
M. Radler
Affiliation:
Northwestern University, Dept. of Materials Science & Engineering, The Technological Institute, Evanston, IL 60201
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Abstract

Recent results on the diffuse scattering from single crystals of Fe1−xO at high temperatures reveal that the defect structure is in striking agreement with embedded cluster calculations by Ellis et al. The dominant defect is an imperfect 7:2 cluster. Mixtures of this and a larger complex (13:4) can explain the electrical properties. XANES studies of this oxide are in agreement with Ellis' theoretical work. However, in both FOx and MnxO it is not possible to use the shift of the cation K absorption edge to characterize valence. In fact in the latter case the shift passes through a minimum, perhaps indicating the onset of clustering.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 82: Symposium I – Characterization of Defects in Materials , 1986, 65
Copyright
Copyright © Materials Research Society 1987

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References

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