Электронный каталог

Статья

Mironovich, A.Yu.
Magnetic and Structural Properties of Mn-Substituted Barium Hexaferrite Prepared by Hydrothermal Synthesis / A.Yu.Mironovich, V.A.Turchenko, [a.o.]. – Text : electronic // Ceramics International. – 2026. – Vol. 52, No. 11, Pt. B. – P. 17034-17045. – URL: https://doi.org/10.1016/j.ceramint.2026.02.290. – Bibliogr.: 80.

This study investigates the effect of Mn substitution on the structural and magnetic properties of barium hexaferrite powders synthesized via a hydrothermal method followed by annealing. BaFe&sub(12-x)Mn&sub(x)O&sub(19) (x = 0, 0.1, 0.2, 0.3, 0.4) samples were characterized by X-ray diffraction, Mössbauer spectroscopy, electron microscopy, X-ray photoelectron spectroscopy, and magnetometry. Structural analysis confirmed the formation of single-phase hexaferrites. The observed variations in lattice parameters, combined with elemental analysis data, indicate the successful incorporation of Mn into the hexaferrite lattice. Magnetometry showed that manganese substitution degrades magnetic parameters by reducing saturation magnetization from 65.88 to 55.84 emu/g and the coercivity from 5.63 to 2.39 kOe. Under the experimental conditions, unsubstituted barium hexaferrite does not form directly in the autoclave, requiring additional annealing. However, in samples with relatively high manganese content (x = 0.3, 0.4), a barium hexaferrite phase formed in the reactor, as confirmed by X-ray diffraction and Mössbauer spectroscopy. The resulting powders had low magnetization (18 emu/g) but actively interacted with an external magnetic field. This makes them suitable for the synthesis of anisotropic ferrite materials through magnetic alignment.



Спец.(статьи,препринты) = С 44 в - Новые химические реакции, соединения и реактивы
ОИЯИ = ОИЯИ (JINR)2026