Effect of Cerium (Ce3+) doping on structural, magnetic and dielectric properties of Barium Ferrite (BaFe12O19)

Ce³⁺-substituted barium ferrite powder with chemical composition BaCe_xFe_12-xO₁₉ (where x= 0.2 and 0.8) have been synthesized by using sol-gel auto combustion. The X-ray diffractometer (XRD) patterns show that with the increase Ce³⁺ content, the lattice constants (a and c) increased. SEM images show the formation of hexagonal platelet like structure. Magnetic measurements show the increase in magnetic saturation (M_s) and remenant magnetization (M_r) to 56.68emu/g and 29.66emu/g respectively. The coercivity (H_c) decreased to 3357.26Oe with increase in compositions from x=0.2 to 0.8. The dielectric behavior of synthesized barium ferrite powders were measured by the vector network analyzer (VNA) for the X-band (8.2-12.4 GHz) frequency range.