Influence of Sc³⁺ substitution on magnetic properties of c-axis textured M-type barium ferrite

In this paper, C-axis textured M-type barium ferrite BaSc_xFe_12−xO₁₉ (x = 0.2, 0.5, 0.7, 0.9, 1.1) have been synthesized via the solid-state method. Results of the SEM reveal that the Sc³⁺ has no obvious effect on the crystal morphology. However, Sc³⁺ ion have remarkable effect on tailor the magnetic properties of BaM ferrite. The measured results for the vibrating sample magnetometer indicate that increasing x of the induced Sc³⁺ yields decreasing the magneto-crystalline anisotropy field, saturation magnetization, coercivity, and reduces the squareness ratio. The site preference mechanism of Sc³⁺ on Fe³⁺ site in BaM hexaferrite crystal structure is also discussed. (paper)