Abstract
The ferromagnetic resonance (FMR) method in situ is used to study the initial stages of the formation of ɛ iron oxide nanoparticles deposited on silica gel at temperatures up to 600°C. It is shown that at high-temperature treatment of starting samples obtained by impregnation with an iron(II) sulfate solution, supermagnetic ɛ-Fe2O3/SiO2 nanoparticles form with a narrow size distribution. An analysis of the FMR data in comparison with the data of other methods enables the formulation of the formation conditions for systems of deposited ɛ-Fe2O3 nanoparticles without other polymorph impurities.
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Original Russian Text Copyright © 2013 S. S. Yakushkin, G. A. Bukhtiyarova, O. N. Martyanov
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Translated from Zhurnal Strukturnoi Khimii, Vol. 54, No. 5, pp. 838–844, September–October, 2013.
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Yakushkin, S.S., Bukhtiyarova, G.A. & Martyanov, O.N. Formation conditions of a magnetically ordered phase ɛ-Fe2O3. A FMR in situ study. J Struct Chem 54, 876–882 (2013). https://doi.org/10.1134/S0022476613050065
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DOI: https://doi.org/10.1134/S0022476613050065