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Magnetic characteristics of MgFe2O4 nanoparticles obtained by glycine–nitrate synthesis

The magnetic properties of magnesium–iron spinel (MgFe 2 O 4 ) 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...

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Bibliographic Details
Published in:Technical physics 2016-02, Vol.61 (2), p.302-305
Main Authors: Zhernovoi, A. I., Komlev, A. A., D’yachenko, S. V.
Format: Article
Language:English
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Summary:The magnetic properties of magnesium–iron spinel (MgFe 2 O 4 ) 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 MgFe 2 O 4 are as follows: specific saturation magnetization J sat = 17.52 A m 2 /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 m 2 in the magnetic saturation state and P r = 121 × 10 –20 A m 2 in the residual magnetization state.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784216020274