Magnetic Properties of Ni-Zn Ferrite Ceramics Prepared from the Blend of Powders
Ni-Zn ferrite ceramics were prepared from the blend of nano-sized powders and ultra-fine particles at the relative low sintering temperature (≤1200°C). The microstructure of the as-sintered samples characterized by SEM indicated that this process obstructed abnormal grain growth which often appeared in the Ni-Zn ferrite ceramics sintered from the nano-sized powders. The result of VSM measurements showed that the ratio of nano-sized powders to ultra-fine particles effected the initial permeability (μi) of the as-sintered samples. Optimum initial permeability can be obtained by adjusting the ratio as 1:1.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
H. Zhong et al., "Magnetic Properties of Ni-Zn Ferrite Ceramics Prepared from the Blend of Powders", Materials Science Forum, Vols. 475-479, pp. 2193-2196, 2005