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Abstract
[Bi 0.75Y 1.05− x Ca 1.2+ x ](Fe 4.4− x Sn x V 0.6)O 12 (Sn x :Bi-CVG) ferrite materials were prepared by conventional ceramic technique. The bulk density, microstructure and the magnetic properties of the obtained samples were analyzed. The results showed that moderate addition of Sn 4+ in Bi-CVG could lower the sintering temperature and enhance the soft magnetic properties obviously. With the increase of Sn 4+ content, the saturation magnetization first increased and then decreased, while the coercivity and the ferromagnetic resonance linewidth (Δ H) first sharply decreased and then slightly increased. Additionally, the specimen of [Bi 0.75Y 0.65Ca 1.6](Fe 4.0Sn 0.4V 0.6)O 12 sintered at 1075 °C possessed the highest density and the optimum magnetic properties: RD (the relative density) = 98.49%, H c = 152.3 A/m, 4 πM s = 711.3 × 10 −4 T, Δ H = 2.1 kA/m.
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