Evolution of Structural and Magnetic Properties of BaFe₁₂O₁₉ with B₂O₃ Addition

We investigate the effects of B₂O₃ addition on structural and magnetic properties of hard magnetic BaFe₁₂O₁₉ particles. The conventional solid state reaction method is used as the synthesis route. Single phase BaFe₁₂O₁₉ could be synthesized with very small amounts of B₂O₃ addition and with calcination at low temperatures (850° C) in short times (1 h). B₂O₃ addition also improves the magnetic parameters significantly. Remanence magnetization and specific magnetization at 1.5 T increase by ∼40% in magnitude although no significant variations on coercivity is observed.