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Magnetic properties of nickel ferrite nanoparticles prepared using flotation extraction |
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| Authors: | Yu A Mirgorod N A Borshch V M Fedosyuk G Yu Yurkov |
| Affiliation: | 1. Southwest State University, ul. 50 let Oktyabrya 94, Kursk, 305040, Russia 2. Scientific-Practical Materials Research Centre, Belarussian Academy of Sciences, ul. Brovki 19, Minsk, 220072, Belarus 3. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr. 49, Moscow, 119991, Russia |
| Abstract: | A method has been proposed for the preparation of nickel ferrite nanoparticles in a system of direct sodium dodecyl sulfate micelles using ion flotation. Amorphous nickel ferrite nanoparticles with the overall composition xNiFe2O4 · yFe2O3 · zH2O, containing dodecyl sulfate anion impurities, have been prepared. According to transmission electron microscopy results, the size distribution of the synthesized nanoparticles has a maximum in the range 4 to 6 nm, and the ferrite is X-ray amorphous. The blocking temperature of the synthesized nanoparticles is 25 K. The ferrite possesses superparamagnetic properties, with a specific saturation magnetization of 15 A m2/kg at 5 K. |
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