Hydrothermal Synthesis and Characterization of Nanostructured Cobalt-Doped Tin Dioxide


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Nanostructured materials based on cobalt-doped SnO2 have been prepared through alkaline hydrothermal treatment of aqueous solutions of inorganic Sn(II) and Co(II) salts. It has been shown that raising the cobalt concentration to 10 wt % leads to significant changes in the morphology and ferromagnetic properties of the synthesis products. The phase composition of the materials corresponds to tetragonal SnO2 with the rutile structure. Calcination above 450°C leads to Co2SnO4 formation. The saturation magnetization and magnetic susceptibility of the materials vary nonlinearly with the amount of cobalt added to the reaction mixture. The nanostructured material obtained in the presence of ~6 wt % Co has an anomalously high room-temperature saturation magnetization, ~3.5 emu/g, which is almost two orders of magnitude higher than that of highly dispersed powders with a similar composition prepared via chemical precipitation.

Sobre autores

T. Zima

Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences; Novosibirsk State Technical University

Autor responsável pela correspondência
Email: zima@solid.nsc.ru
Rússia, ul. Kutateladze 18, Novosibirsk, 630128; pr. K. Marksa 20, Novosibirsk, 630073

I. Malygin

Novosibirsk State Technical University

Email: zima@solid.nsc.ru
Rússia, pr. K. Marksa 20, Novosibirsk, 630073

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