Abstract
NixZn1-xFe2O4 ferrites (x=0.0∼1.0 with a step of 0.1) were prepared by a novel molten salt method. The effects of Ni/Zn ratio on the microstructure and electromagnetic performance of the acquired ferrites were investigated. All the samples are composed of a pure ferrite with cubic spinel structure, and their microstructures are quite homogeneous. With the increase of Ni content, the lattice constant of the samples decreases, the grain size fluctuates in a very narrow range around 2.0 μm, and the saturation magnetization firstly increases and then decreases, presenting the maximum value with x=0.6, while the coercivity basically displays an inverse trend to the saturation magnetization. In the frequency range from 1 M to 1 GHz, the initial permeability of the acquired NixZn1-xFe2O4 ferrites decreases, the cut-off frequency increases, and the magnetic loss decreases with increasing Ni content.
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