Magnetic properties of nickel ferrite nanoparticles prepared using flotation extraction

作者：Mirgorod Yu A^*; Borshch N A; Fedosyuk V M; Yurkov G Yu

来源：Inorganic Materials, 2013, 49(1): 109-114.

DOI：10.1134/S0020168512110064

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 xNiFe(2)O(4) center dot yFe(2)O(3) center dot zH(2)O, 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 m(2)/kg at 5 K.

• 出版日期2013-1