Cation Distribution in the Composite Materials of the CaFe2O4-α-Fe2O3 Series
- Authors: Knyazev Y.V.1, Shishkina N.N.2, Bayukov O.A.1, Kirik N.P.2, Solovyov L.A.2, Zhizhaev A.M.2, Rabchevsky E.V.2, Anshits A.G.2
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Affiliations:
- Kirensky Institute of Physics, Federal Krasnoyarsk Research Center, Siberian Branch
- Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch
- Issue: Vol 60, No 5 (2019)
- Pages: 763-771
- Section: Article
- URL: https://journals.rcsi.science/0022-4766/article/view/162112
- DOI: https://doi.org/10.1134/S0022476619050081
- ID: 162112
Cite item
Abstract
Structured composite materials CaFe2O4-α-Fe2O3 (α-Fe2O3 content is 2–82 wt.%) are obtained with the method of solid-phase synthesis at 1000 °C. The phase composition of the samples is studied using powder X-ray diffraction. It is shown that the content of CaFe2O4 and α-Fe2O3 phases changes linearly, depending on the composition of the starting material. The scanning electron microscopy data indicate the formation of a two-phase system α-Fe2O3-CaFe2O4. The Mössbauer spectroscopy data at room temperature testify the formation of cationic iron vacancies in the CaFe2O4 crystal structure in the absence of α-Fe2O3 structural defects. Cationic vacancies can be formed during the synthesis in the atmosphere of air.
About the authors
Yu. V. Knyazev
Kirensky Institute of Physics, Federal Krasnoyarsk Research Center, Siberian Branch
Author for correspondence.
Email: yuk@iph.krasn.ru
Russian Federation, Krasnoyarsk
N. N. Shishkina
Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch
Email: yuk@iph.krasn.ru
Russian Federation, Krasnoyarsk
O. A. Bayukov
Kirensky Institute of Physics, Federal Krasnoyarsk Research Center, Siberian Branch
Email: yuk@iph.krasn.ru
Russian Federation, Krasnoyarsk
N. P. Kirik
Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch
Email: yuk@iph.krasn.ru
Russian Federation, Krasnoyarsk
L. A. Solovyov
Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch
Email: yuk@iph.krasn.ru
Russian Federation, Krasnoyarsk
A. M. Zhizhaev
Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch
Email: yuk@iph.krasn.ru
Russian Federation, Krasnoyarsk
E. V. Rabchevsky
Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch
Email: yuk@iph.krasn.ru
Russian Federation, Krasnoyarsk
A. G. Anshits
Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch
Email: yuk@iph.krasn.ru
Russian Federation, Krasnoyarsk
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