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

✍ Scribed by Frank J. Berry; Colin Greaves; Julia G. McManus; Michael Mortimer; Gordon Oates

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 222 KB
Volume: 130
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.1997.7363

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✦ Synopsis

The structural characteristics of tin-and titanium-doped -Fe 2 O 3 prepared 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 the -Fe 2 O 3 structure. 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 of -Fe 2 O 3 .

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