Fe2o3 nanoparticles doped with gd: Phase transformations as a result of thermal annealing
Kozlovskiy A. Egizbek K. Zdorovets M.V. Kadyrzhanov K.
1 January 2021MDPI AG
Molecules
2021#26Issue 2
The aim of this work is to study the effect of the phase composition of the synthesized Fe2O3-Gd2O3 nanoparticles on the efficiency of using magnetic hyperthermia as a basis for experiments. This class of structures is one of the most promising materials for biomedical applications and magnetic resonance imaging. In the course of the study, the dynamics of phase transformations of nanoparticles Fe2O3 → Fe2O3/GdFeO3 → GdFeO3 were established depending on the annealing temperature. It has been determined that the predominance of the GdFeO3 phase in the structure of nanoparticles leads to an increase in their size from 15 to 40 nm. However, during experiments to determine the resistance to degradation and corrosion, it was found that GdFeO3 nanoparticles have the highest corrosion resistance. During the hyperthermal tests, it was found that a change in the phase composition of nanoparticles, as well as their size, leads to an increase in the heating rate of nanoparticles, which can be further used for practical purposes.
Hyperthermia , Magnetic nanoparticles , Mechanochemical mixing , Phase transformations
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Engineering Profile Laboratory, L. N. Gumilyov Eurasian National University, Satpaev str. 5, Nur-Sultan, 010008, Kazakhstan
Laboratory of Solid State Physics, The Institute of Nuclear Physics, Ibragimov str. 1, Almaty, 050032, Kazakhstan
Department of Intelligent Information Technologies, Ural Federal University, Mira str. 19, Ekaterinburg, 620002, Russian Federation
Engineering Profile Laboratory
Laboratory of Solid State Physics
Department of Intelligent Information Technologies
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