Physical Characteristic of Zn Doped Soft Ferrites M_xZn_1-x Fe₂O₄

Abstract:

The chemical composition and preparation methods for ferrite were studied in order to control the quality of ferrite such as higher initial permeability and low energy losses. Nine samples of soft ferrite M_xZn_1-xFe₂O₄ with M=Ni, Mg, Cu ; x=0.2, 0.3, and 0.4 was prepared using solid state ceramic method and characterized for initial permeability, coercivity and relative loss factor (RLF). Studies show that samples with low Zn concentration, x=0.4, exhibit higher initial permeability, μ_i, with magnitude highest in sample with Ni concentration, that also has the highest atomic susceptibility among Ni, Mg and Cu. Initial permeability, μ_i ,also influences the resistivity of the samples with increasing susceptibility of magnetic spins, so samples with higher μ_i, e.g. Ni_0.4Zn_0.6Fe₂O₄ exhibit increased resistivity with increased initial permeability while Cu_0.4Zn_0.6Fe₂O₄ exhibit decreasing resistivity with increasing Cu content and lower initial permeability.

• Periodical: Key Engineering Materials (Volumes 594-595)
• Pages: 39-43
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.594-595.39
• Online since: December 2013
• Authors: Abdullah Chik, Nazli Ahmad Aini, Haider F. Abdul Amir

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