Synthesis and Physicochemical Properties of Magnetic Fe3O4 Particles Doped with Gd(III)
Y. D. Mitskevicha, *, M. M. Degtyarikb, A. A. Kharchankac, M. V. Bushinskyd, and J. A. Fedotovac
aBelarusian State University, Physical faculty, Minsk, 220030 Belarus
bResearch Institute of Physical Chemical Problems of the Belarusian State University, Minsk, 220030 Belarus
cResearch Institute of Nuclear Problems of the Belarusian State University, Minsk, 220030 Belarus
dPractical Center of the National Academy of Sciences of Belarus of Materials Science, Minsk, 220072 Belarus
email: *fcfvvv12@gmail.com
Received 19 October, 2024
Abstract— Magnetic Fe3O4 nanoparticles (NPs) were synthesized by alkaline precipitation from aqueous solutions of divalent and trivalent iron salts. Synthesis of Fe3-xGdxO4 NPs (x = 0.05; 0.1) was performed by adding a calculated amount of Gd(NO3)3·6H2O to the initial solution of iron salt mixture. The phase composition and magnetic properties of the synthesized powders were investigated by X-ray diffraction analysis, 57Fe Mössbauer spectroscopy and vibration sample magnetometry at temperatures T = 7, 20 and 300 K. The investigations confirmed the formation of NPs of non-stochiometric Fe3-δO4 magnetite, as well as magnetite doped with Gd3+ ions. The correlation between the average diameter of NPs of the initial Fe3-δO4 powder and doped Fe3-xGdxO4 powder and the salt used in the synthesis, as well as the concentration of Gd (x), respectively, was revealed.
Keywords:
Fe3-δO4 NPs,
iron salts,
gadolinium,
X-ray diffraction analysis,
Mössbauer spectroscopy
DOI: 10.1134/S0036023625601242