Trends in formation of the nanocrystalline structure and cationic ordering in the Dy2O3-HfO2 (1: 1) system

Evolution of the nanocrystalline structure of the complex oxide Dy 2 HfO 5 in the course of thermal annealing at temperatures to 1600°C has been studied by a combination of X-ray and synchrotron methods, including traditional and anomalous X-ray diffraction, PDF, EXAFS, and SAXS. The changes in crys...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2013-03, Vol.58 (3), p.331-337
Main Authors: Popov, V. V., Menushenkov, A. P., Zubavichus, Ya. V., Veligzhanin, A. A., Yaroslavtsev, A. A., Chernikov, R. V., Leshchev, D. S., Petrunin, V. F., Korovin, S. A., Bednarcik, J.
Format: Article
Language:English
Subjects:
Annealing
Cationic
Cations
Chemistry
Chemistry and Materials Science
Crystallites
Hafnium
Inorganic Chemistry
Nanocrystals
Order disorder
Physical Methods of Investigation
X-rays
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Summary:Evolution of the nanocrystalline structure of the complex oxide Dy 2 HfO 5 in the course of thermal annealing at temperatures to 1600°C has been studied by a combination of X-ray and synchrotron methods, including traditional and anomalous X-ray diffraction, PDF, EXAFS, and SAXS. The changes in crystallite size upon annealing of the as-synthesized amorphous precursor have been analyzed in detail. The systematic distortions of a fluorite-type perfect crystal structure (space group ) related to the nonequivalence of the local environment of the Dy and Hf cations but not resulting in formation of a pyrochlore-type cationordered structure in this system have been examined.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023613030121