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High-Resolution Electron Microscopy of Olivine-Magnetite Interfaces.

Published online by Cambridge University Press:  25 February 2011

Stuart Mckernan  and
C. Barry Carter
Stuart Mckernan
Affiliation:
Department, of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455.
C. Barry Carter
Affiliation:
Department, of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455.
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Abstract

In the oxidation of iron-rich olivine (Mg,Fe)2SiO4 at elevated temperatures interfaces between olivine and the magnetite spinel (Fe3O4) are formed. The orientation relation between these structures is such that the planar spacing for the principal low index planes are very closely matched in the two materials. Regions of different contrast are observed in the olivine up to 5–10 nm from the interface. It is proposed that this contrast is due to enhanced iron concentration in this region caused by the strain field around the magnetite precipitates.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 280: Symposium B – Evolution of Surface and Thin Film Microstructure , 1992 , 553
Copyright
Copyright © Materials Research Society 1993

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References

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