CuO添加剂对高导MnZn铁氧体饱和磁感应强度、磁导率和磁谱频散特性的影响  

Effects of CuO additive on the saturation magnetic induction,permeability and magnetic spectrum frequency dispersion characteristics of high permeability MnZn ferrite

作　　者：王宏 杨仕机 宋兴连 徐士亮 刘涛 王超 余忠 孙科 兰中文 WANG Hong;YANG Shi-ji;SONG Xing-lian;XU Shi-liang;LIU Tao;WANG Chao;YU Zhong;SUN Ke;LAN Zhong-wen(Jiangxi Sunshine Electronic Co,Ltd,Yichun 336202,China;Linyi Chunguang Magnet Industry Co,Ltd,Linyi 276017,China;School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]江西尚朋电子科技有限公司,江西宜春336202 [2]临沂春光磁业有限公司,山东临沂276017 [3]电子科技大学材料与能源学院,四川成都610054

出　　处：《磁性材料及器件》2022年第4期6-10,共5页Journal of Magnetic Materials and Devices

摘　　要：采用传统氧化物陶瓷工艺法制备高磁导率MnZn软磁铁氧体材料,研究了CuO添加对材料晶相结构、显微形貌、饱和磁感应强度B_(s)、磁导率以及磁谱频散特性的影响。结果表明,适量的CuO添加能够改善高导MnZn铁氧体材料的显微结构,提高B_(s)、截止频率fr等性能,但对磁导率稍有不利影响;而过量添加CuO,则会导致材料显微结构不均匀性增强,材料磁性能降低。此外,高导MnZn铁氧体的磁化机制主要以畴壁位移运动为主,且随着CuO含量增加,畴壁位移贡献占比先增大后减小。High permeability MnZn ferrite materials were prepared by conventionaloxide ceramic technique.The influence of CuO addition on the crystal structure,microstructure,saturation magnetic induction B_(s),permeability and magnetic spectrum dispersion characteristics of the materials were investigated.The results show that an appropriate content of CuO can improve the microstructure,increase the B_(s) and cut-off frequency fr of high permeability MnZn ferrites,but it has a slight adverse effect on magnetic permeability.However,the excessive CuO content results in the inhomogeneity of microstructure,and reduces the magnetic properties.In addition,the magnetization mechanism of high permeability MnZn ferrites is mainly based on domain wall motion,and with the increase of CuO content,the contribution of domain wall motion first increases and then decreases.

关 键 词：MNZN铁氧体 CuO添加 饱和磁感应强度 磁导率 磁化机制 

分 类 号：TM271.2[一般工业技术—材料科学与工程]