Title: Synthesis and magnetic property of BaZr(CoMn)_0.5Fe₁₀O₁₉ powder by coprecipitation method

Authors: H.Y. He; N. Mao

Addresses: Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an, Shaanxi, (710021), China ' Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an, Shaanxi, (710021), China

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.

Keywords: magnetic materials; solvents; coprecipitation method; anisotropy; magnetic properties; BaZr(CoMn)0.5Fe10O19; nanomanufacturing; nanotechnology; hexaferrites; hexaferrite powders; ferromagnetic materials.

DOI: 10.1504/IJNM.2013.052878

International Journal of Nanomanufacturing, 2013 Vol.9 No.1, pp.43 - 50

Received: 07 Apr 2012
Accepted: 19 Sep 2012
Published online: 31 Mar 2014 *

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