材料科学
铁氧体(磁铁)
复合材料
差热分析
铁氧体磁芯
溶胶凝胶
退火(玻璃)
磁导率
热重分析
衍射
化学工程
电磁线圈
光学
纳米技术
遗传学
生物
电气工程
物理
工程类
膜
作者
Jianchuan Chen,Hai-Shan Guo,Xiaoxi Zhong,Jiayu Fu,Sheng-Jiang Huang,Xuanhao Xie,Lezhong Li
标识
DOI:10.1016/j.jmmm.2021.167774
摘要
FeSiAl/Ni0.4Zn0.45Co0.15Fe2O4 ferrite core–shell particles and cylindrical magnetic cores have been synthesized by sol–gel auto-combustion method. The magnetic cores were prepared by pellet molding process and high temperature annealing at 700 °C for 1 h. The reaction, surface morphology and magnetic properties of FeSiAl/ Ni0.4Zn0.45CoFe2O4 ferrite cores have been investigated by Differential thermal analysis-thermogravimetry (DTA-TG), X-ray diffraction (XRD), the impedance analyzer and Vibration sample magnetometer (VSM). The results indicates that there are three stages to form ferrite. The cores of unphosphated FeSiAl/Ni0.4Zn0.45CoFe2O4 ferrite will be oxidized in air at 700 °C. The spinel ferrites are successfully prepared by sol–gel and form a homogeneous as well as porous structure on the surface of the cores. The maximum permeability is 41 at 6 wt% ferrite. Ms decreases from 106.6 emu/g to 103.6 emu/g, with the increase of ferrite content.
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