Synthesis and magnetic property of BaZr(CoMn)_0.5Fe₁₀O₁₉ powder by coprecipitation method
by H.Y. He; N. Mao
International Journal of Nanomanufacturing (IJNM), Vol. 9, No. 1, 2013

Abstract: Substituted M-type hexaferrites are highly anisotropic ferromagnetic materials. In this paper, we report the synthesis and characterisation of BaZr(CoMn)_0.5Fe₁₀O₁₉ powder by coprecipitation method. The solvent and preheating effects were investigated. The synthesised powders were characterised with X-ray diffraction, scanning electron microscopy and vibrating sample magnetometer. The experimental results indicated that the powders prepared with the water as solvent exhibits high coercivity of 1.30 kOe and a high saturation magnetisation of 38.65 emu g⁻¹, while the powder prepared with the powder prepared with the water/ethanol solvent exhibits low coercivity of 1.01 kOe and a low saturation magnetization of 34.25 emu g⁻¹, at applied field of 30 kOe. The preheating at 400°C also led to some changes in particle morphology and magnetic property for both powders.

Online publication date: Mon, 31-Mar-2014

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