Technological Conditions and Magnetic Properties of Y-Type Hexaferrite Prepared by Chemical Co-Precipitation Method

Wen Guo Chen; Jian Qing Dai; Jing Bing Xia; Yao Min Ding; Zhi Gang Hu

doi:10.4028/www.scientific.net/AMR.412.146

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 412Technological Conditions and Magnetic Properties...

Technological Conditions and Magnetic Properties of Y-Type Hexaferrite Prepared by Chemical Co-Precipitation Method

Abstract:

The Y-type hexaferrite precursors was synthesized by co-precipitation, and the pivotal technological conditions, including pH value, temperature (T), rotate speed (R) and the flow velocity of salt solution (V) were discussed. The particles of precursors were studied by Laser particle size analyzer (LPS). The precursor calcined at 900°C was characterized via X-ray Diffraction (XRD), the vibrating sample magnetometer (VSM) and HP4291A impedance analyzer were used to investigated magnetic properties. The results showed that the particle sizes were around 3µm (D50) and the distribution range was from 2.28μm to 4.47μm, in the optimized technological conditions: pH = 10.50, T = 50°C, R = 300 rpm, V = 0.35 ml/min, SDBS = 0.3 g/L, the specific saturation magnetization, coercive force, residual magnetization, initial permeability and factor of quality of the sample were σ_s≈ 29.72A·m²·kg^-1, H_c≈ 4.11/kA·m^-1, σ_r≈ 7.74 A·m²·kg^-1, μ_i≈ 9 and Q ≈ 18 respectively.

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Advanced Materials Research (Volume 412)

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146-149

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https://doi.org/10.4028/www.scientific.net/AMR.412.146

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Online since:

November 2011

Authors:

Wen Guo Chen, Jian Qing Dai, Jing Bing Xia, Yao Min Ding, Zhi Gang Hu

Keywords:

Co-Precipitation, Magnetic Property, Y-Type Hexaferrites

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