Synthesis and crystal structure of M- and W-type manganese-substituted strontium hexaferrite

The article is devoted to the synthesis and study of the structure of strontium hexaferrite and manganese doped strontium hexaferrite. The samples were obtained at various temperatures in the range of 1100-1300 °C by solid-state reaction. An X-ray diffraction (XRD) analysis was carried out and the dependence of the lattice parameters of the main phases on the synthesis temperature was determined. It was found that at 1300 °C strontium carbonate and iron (III) oxide form a pure M-type strontium hexaferrite SrFe12O19, however, at the same temperature, but the addition of manganese (III) oxide to the charge leads to a change in the type of ferrite from M- to W-type.