Effect of Cd²⁺ Substitution on the Magnetic Properties of NiCuZn Ferrites for Low Temperature Firing

Abstract:

Cd²⁺-substituted NiCuZn ferrites with compositions of Ni_0.24-yCd_yCu_0.21Zn_0.55 Fe_1.92O_3.88 (y = 0.00, 0.002, 0.005, 0.007, 0.01) were prepared by a solid state reaction method. The effects of Cd²⁺ substitution on phase, microstructure feature and magnetic properties of samples were discussed. The results showed that NiCuZn ferrites with Cd²⁺ substitution were single spinel phases. The lattice parameter decreased first and subsequently increased due to the difference of ions radius and incomplete substitution. The density of sintered samples had similar trend as well. The saturation magnetization M_S decreased with the increase of Cd²⁺ ions. The highest initial permeability μ_i and lowest relative loss factor tanδ/μ_i were found in the composition with Cd content y=0.007 attributed to the decrease of crystal magnetic anisotropy constant K₁ of the ferrites.

• Periodical: Key Engineering Materials (Volumes 602-603)
• Pages: 931-935
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.602-603.931
• Online since: March 2014
• Authors: Hui Zhang, Xi Yun He, Xia Zeng, Ying Shi*
• Keywords: Cd²⁺ Substitution, Magnetic Property, Microstructure, NiCuZn Ferrite

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