Heat-stimulated tuning of the crystalline and magnetic structure of MgFe2O4 preceramic powders

Lebedev, L.A.; Kiseleva, T.Y.; Lazareva, E.V.; Rusakov, V.S.; Komlev, A.S.; Tenevich, M.I.; Seroglazova, A.S.; Popkov, V.I.

Авторы: Lebedev Lev A., Kiseleva Tatyana Yu, Lazareva Evgeniya V., Rusakov Vyacheslav S., Komlev Aleksei S., Tenevich Maxim I., Seroglazova Anna S., Popkov Vadim I.
Журнал: Ceramics International
Том: 51
Номер: 12
Год издания: 2025
Издательство: Pergamon Press Ltd.
Местоположение издательства: United Kingdom
Первая страница: 15456
Последняя страница: 15465
DOI: 10.1016/j.ceramint.2025.01.382
Аннотация: Magnesioferrite (MgFe2O4) spinel nanoparticles were synthesized via the solution combustion method and subjected to annealing at temperatures ranging from 400 ◦C to 800 ◦C to investigate the effect of thermal treatment on their structural and magnetic properties. X-ray diffraction revealed a significant crystallization transition between 500 ◦C and 600 ◦C, with crystallite sizes increasing from approximately 5 nm–25 nm. M¨ossbauer spectroscopy identified a transition from superparamagnetic to ferrimagnetic behavior, with hyperfine magnetic fields reaching 460–480 kOe in samples annealed above 600 ◦C. Magnetic measurements showed a saturation magnetization of 15–50 emu/g and coercivity ranging from 0 to 120 Oe, depending on annealing temperature. Raman spectroscopy confirmed increased crystallinity and structural ordering at higher temperatures. These results demonstrate that annealing effectively tailors the functional properties of MgFe2O4, enabling its application in magnetic, catalytic, and sensing technologies.
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Heat-stimulated tuning of the crystalline and magnetic structure of MgFe2O4 preceramic powdersстатья

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