Abstract:
Composite FemOn–SiO2 particles have been obtained by precipitation of iron oxide from aqueous solution with the addition of tetraethoxysilane. The shapes and sizes of separate single particles and their aggregates have been determined by scanning electron microscopy. Changes in the stability of the colloidal suspension due to external magnetic field and the addition of NaCl have been evaluated. Based on magnetization curves obtained on a vibrating-sample magnetometer and characteristics calculated within the theoretical model of magnetostatically interacting particles, it is shown that the composite particles are superparamagnetic.
Citation:
O. S. Vezo, K. G. Gareev, D. V. Korolev, I. A. Kuryshev, S. V. Lebedev, V. A. Moshnikov, E. S. Sergienko, P. V. Kharitonskii, “Aggregate stability and magnetic characteristics of colloidal FemOn–SiO2 particles obtained by sol–gel method”, Fizika Tverdogo Tela, 59:5 (2017), 980–985; Phys. Solid State, 59:5 (2017), 1008–1013
\Bibitem{VezGarKor17}
\by O.~S.~Vezo, K.~G.~Gareev, D.~V.~Korolev, I.~A.~Kuryshev, S.~V.~Lebedev, V.~A.~Moshnikov, E.~S.~Sergienko, P.~V.~Kharitonskii
\paper Aggregate stability and magnetic characteristics of colloidal Fe$_{m}$O$_{n}$--SiO$_{2}$ particles obtained by sol--gel method
\jour Fizika Tverdogo Tela
\yr 2017
\vol 59
\issue 5
\pages 980--985
\mathnet{http://mi.mathnet.ru/ftt9591}
\crossref{https://doi.org/10.21883/FTT.2017.05.44390.372}
\elib{https://elibrary.ru/item.asp?id=29405099}
\transl
\jour Phys. Solid State
\yr 2017
\vol 59
\issue 5
\pages 1008--1013
\crossref{https://doi.org/10.1134/S1063783417050304}
Linking options:
https://www.mathnet.ru/eng/ftt9591
https://www.mathnet.ru/eng/ftt/v59/i5/p980
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