Abstract
The magnetic properties of magnesium–iron spinel (MgFe2O4) powdered nanoparticles obtained by glycine–nitrate synthesis are investigated by X-ray phase analysis and the NMR method. According to the results of X-ray phase analysis, the average size of the crystalline part of nanoparticles of the powder under investigation is 45 ± 4 nm. Magnetization J is determined using the formula J = (B/μ0)–H, where B and H are the induction and strength of the magnetic field in the sample, which are measured by the NMR method. The magnetic characteristics of MgFe2O4 are as follows: specific saturation magnetization J sat = 17.52 A m2/kg, specific residual magnetization J r = 5.73 A m2/kg, coercive force H c = 4600 A/m, and magnetic moment P sat = 371 × 10–20 A m2 in the magnetic saturation state and P r = 121 × 10–20 A m2 in the residual magnetization state.
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Original Russian Text © A.I. Zhernovoi, A.A. Komlev, S.V. D’yachenko, 2016, published in Zhurnal Tekhnicheskoi Fiziki, 2016, Vol. 61, No. 2, pp. 146–148.
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Zhernovoi, A.I., Komlev, A.A. & D’yachenko, S.V. Magnetic characteristics of MgFe2O4 nanoparticles obtained by glycine–nitrate synthesis. Tech. Phys. 61, 302–305 (2016). https://doi.org/10.1134/S1063784216020274
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DOI: https://doi.org/10.1134/S1063784216020274