ADAPTATION WAYS FOR A HIGH CONCENTRATION OXYGEN VACANCIES IN NONSTOICHIOMETRIC STRONTIUM FERRITES
U. V. Ancharova1,2, S. V. Cherepanova3,2, S. A. Petrov1
1Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk National Research State University, Novosibirsk, Russia
3Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: гетерогенные твердые растворы на основе ферритов стронция, локальная структура, упорядочение вакансий, синхротронное излучение, рентгеновская дифракция, heterogeneous solid solutions based on strontium ferrites, local structure, vacancy ordering, synchrotron radiation, X-ray diffraction
Abstract
The structural analysis methods are used to study the features of the local structure of nonstoichiometric strontium ferrites with a high concentration of oxygen vacancies depending on the degree of substitution by highly charged cations and external conditions. The ways of their structure adaptation for the compositions with oxygen stoichiometry beyond the homogeneity regions of vacancy-ordered phases are suggested: it occurs via the formation of modulated one- and three-dimensional disordered nanostructures.
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