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Topotactical Relationships Between Hematite α-Fe2O3 and the Magnetite Fe3O4 which is Formed on it by Thermal Decomposition Under Low Oxygen Pressure

Published online by Cambridge University Press:  06 March 2019

Raymond Baro ,
Hervé Moineau  and
J. Julien Heizmann
Raymond Baro
Affiliation:
Laboratoire de Metallurgie Structurale Metz, France
Hervé Moineau
Affiliation:
Laboratoire de Metallurgie Structurale Metz, France
J. Julien Heizmann
Affiliation:
Laboratoire de Metallurgie Structurale Metz, France
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Abstract

The present work was performed on natural monocrystals from Mexico. All crystals presented well-formed natural faces of indices (01.2), (01.4), (11.3), and (00.1). They were reduced to magnetite in a thermobalance by heating at 1200°C under a pressure of 10−3 torr. The techniques used in the present work were Laue reflection diagrams and pole figures. The magnetite formed on the hematite showed preferential orientations of three different types. The mutual orientations of the two oxides all present a common zone axis for the lattices formed by the oxygen ions.

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Type
Research Article
Information
Advances in X-Ray Analysis , Volume 11: Sixteenth Annual Conference on Applications of X-ray Analysis, August 9-11, 1967 , 1967 , pp. 473 - 481
Copyright
Copyright © International Centre for Diffraction Data 1967

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References

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