Structural and Magnetic Behavior of MFe₂O₄ Nanopowders for Water Treatment

Abstract:

This study describes the sol-gel method's synthesis of ferrites [MFe₂O₄, M(II) = Co, Cu, Mg, Ni, and Zn]. The structure was studied by X-ray diffraction analysis. The surface morphology was studied using scanning electron microscopy (SEM), and the magnetic properties were studied using Mössbauer spectroscopy. The diffraction peaks at 30.1^◦, 35.6^◦, 43.2^◦, 53.6^◦, 57^◦, and 62.6◦ can be attributed to Bragg reflections (2 2 0), (3 1 1), (4 0 0), (4 2 2), (5 1 1), and (4 4 0) planes confirm the formation of a cubic spinel structure of ferrite nanocrystals. The average size of magnesium ferrite crystallites calculated from the half-width of the most intense peak (3 1 1) was 25.96 ± 4.32 nm. Magnesium ferrite is a magnetically soft ferromagnetic powder with a predominance of the magnetite phase and relatively high magnetisation values. The magnitude of the hyperfine magnetic field for the studied nanoparticles is in the range of 440-490 kOe, which confirms the hypothesis that the analysed samples are particles of an iron-containing oxide with a disordered structure.

• Periodical: Key Engineering Materials (Volume 974)
• Pages: 83-90
• DOI: https://doi.org/10.4028/p-I5Ml4P
• Online since: February 2024
• Authors: Gulnar Sugurbekova*, E. Sugurbekov, Gulzat Demeuova, A Gabdullina, Rabiga Kudaibergenova
• Keywords: Magnetic Material, MgFe₂O₄ Nanoparticles, Mössbauer Spectroscopy, X-Ray Diffraction

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