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Point Defects and Diffusion in Nonstoichiometric Metal Oxides

Published online by Cambridge University Press:  29 November 2013

Rüdiger Dieckmann
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Extract

This article briefly reviews the relationships between point defects and ion diffusion in nonstoichiometric ionic crystals, with special emphasis on cubic oxides. It focuses on crystalline materials with negligibly small concentrations of nonequilibrium defects such as dislocations and grain boundaries. First, the concepts used to analyze the point defect structure and the diffusion of ions in nonstoichiometric crystals will be discussed. Then, specific oxides will be considered as examples. These oxides are manganosite, Mn1−ΔO, and spinels of the type Me3−δO4 with Fe and Mn cations, respectively.

Type
Point Defects Part II
Information
MRS Bulletin , Volume 16 , Issue 12 , December 1991 , pp. 27 - 32
Copyright
Copyright © Materials Research Society 1991

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