Cation Distribution in the Composite Materials of the CaFe2O4-α-Fe2O3 Series


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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.

作者简介

Yu. Knyazev

Kirensky Institute of Physics, Federal Krasnoyarsk Research Center, Siberian Branch

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Email: yuk@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk

N. Shishkina

Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch

Email: yuk@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk

O. Bayukov

Kirensky Institute of Physics, Federal Krasnoyarsk Research Center, Siberian Branch

Email: yuk@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk

N. Kirik

Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch

Email: yuk@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk

L. Solovyov

Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch

Email: yuk@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk

A. Zhizhaev

Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch

Email: yuk@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk

E. Rabchevsky

Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch

Email: yuk@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk

A. Anshits

Institute of Chemistry and Chemical Technology, Federal Krasnoyarsk Research Center, Siberian Branch

Email: yuk@iph.krasn.ru
俄罗斯联邦, Krasnoyarsk

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