The Structural Characterization of Tin- and Titanium-Dopedα-Fe2O3Prepared by Hydrothermal Synthesis

The structural characteristics of tin- and titanium-dopedα-Fe2O3prepared by hydrothermal methods have been investigated by Rietveld structure refinement of the X-ray powder diffraction data. The analysis reveals that the dopant ions adopt two distinct sites: in addition to partially substituting at...

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Bibliographic Details
Published in:Journal of solid state chemistry 1997-05, Vol.130 (2), p.272-276
Main Authors: Berry, Frank J., Greaves, Colin, McManus, Julia G., Mortimer, Michael, Oates, Gordon
Format: Article
Language:English
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Summary:The structural characteristics of tin- and titanium-dopedα-Fe2O3prepared by hydrothermal methods have been investigated by Rietveld structure refinement of the X-ray powder diffraction data. The analysis reveals that the dopant ions adopt two distinct sites: in addition to partially substituting at the octahedral Fe sites, they also occupy the interstitial octahedral sites which are vacant in theα-Fe2O3structure. The structural model deduced involves clusters of three substituted cations and is rational in that it represents microstructural regions of the rutile structure within a matrix ofα-Fe2O3.
ISSN:0022-4596
1095-726X
DOI:10.1006/jssc.1997.7363