Study On High Quality NiZn Ferrites By Co-precipitation Method

In this paper, the series of nanometer powder of NiZn ferrites were synthesized by the co-precipitation method and the corresponding bulky NiZn ferrites were prepared with the powder. The experimental results indicate that such NiZn ferrites exibit high quality which can be attributed to the characteristics of co-precipitation. The powder synthesized by co-precipitation has many advantages such as fine crystal grains, good homogeneity and purity, high activity, and these favor the solid phase reaction. So the magnetic properties of the samples were better than that of those prepared by conventional oxides methods.In the experiments, the structure and phase of the powder prepared by co-precipitation were investigated by X-ray diffraction instruction (XRD) and transmission electronic microscope (TEM). The magnetic properties of the NiZn ferrites samples were measured in detail.Meanwhile, the effects of some dopants and substitutes to the magnetic properties were researched, and the relevant physical mechanisms were analyzed and discussed. And then some approaches were brought forward to improve the properties of NiZn ferrites.