Ni含量对Fe_NixZn1-xFe2O4软磁复合材料磁性能的影响.docVIP

 Ni 含量对 Fe/NixZn1-xFe2O4 软磁复合材料 磁性能的影响# 陶龙旭，王棋，金立川，唐晓莉，张怀武，钟智勇** 5 （电子科技大学 电子薄膜与集成器件国家重点实验室，成都 610054） 摘要：利用化学共沉淀法制备了 Fe/NixZn1-xFe2O4(x=0.1、0.3、0.5、0.7、0.9)软磁复合材 料,系统探讨了 Ni 含量对 Fe/NixZn1-xFe2O4 软磁复合材料磁性能的影响。SEM、EDS 和 XRD 分析结果表明，铁粉表面包覆了一层致密、均匀的 Ni-Zn 铁氧体。VSM 测试结果表明，随 10 15 20 25 30 35 40 着 Ni 含量的增加，饱和磁化强度 Ms 先增大后减小，当 x=0.7 时，Ms 最大。磁谱分析发现， Fe/NixZn1-xFe2O4 软磁复合材料的起始磁导率μ随着 Ni 含量的增加,先增大后减小，当 x=0.3 时，μ最大。并且从理论上分析了相成分，磁晶各向异性和磁谱之间的关系。通过分 析，Ni 含量对 Fe/NixZn1-xFe2O4 软磁复合材料磁性能的影响可以得到很好的解释和理解。 磁损耗 Pcv 测试结果表明，在不同的频率范围内 Pcv 随 Ni 含量变化也会呈现出不同的变化 趋势。 关键词：软磁复合材料；化学共沉淀法；磁损耗 中图分类号：TM271+.2 Effect of Ni content on the magnetic properties of Fe/NixZn1-xFe2O4 soft magnetic composites TAO Longxu, WANG Qi, JIN Linchuan, TANG Xiaoli, ZHANG Huaiwu, ZHONG Zhiyong (State key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054) Abstract: Fe/NixZn1-xFe2O4 (x=0.1, 0.3, 0.5, 0.7, 0.9) soft magnetic composites were prepared by the chemical co-precipitation method. The effect of Ni content on the magnetic properties was discussed. The results of SEM, EDS and X-ray analysis indicate that an uniform and dense Ni-Zn ferrite was coated on the surface of bare Fe. VSM results show that, with the Ni content increasing, the saturation magnetization increases at first, the maximum values were obtained at x=0.7, and then decrease. From frequency profiles of permeability, it was found that the initial permeability increases at first, with the Ni content increasing, the maximum values were obtained at x=0.3, and then decrease. Furthermore, the relationships among phase composition, anisotropy and permeability spectra are theoretically investigated, and according to the analysis, Ni content effects on its magnetic properties can be well explained and understood. Magnetic loss results shows that different variation tendencies with the changing of Ni content in different frequency range. Key words: soft magnetic composites;