Sm^(3+)掺杂对镍锌铁氧体电磁参数及吸波性能的影响  

Effect of Sm^(3+) doping on electromagnetic parameters and absorbing properties of NiZn ferrite

作　　者：鲜聪 王殿杰 孔伟 XIAN Cong;WANG Dian-jie;KONG Wei(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;Ninth Institute,China Electronics Technology Group Corporation,Mianyang 621000,China)

机构地区：[1]电子科技大学电子科学与工程学院,四川成都610054 [2]中国电子科技集团公司第九研究所,四川绵阳621000

出　　处：《磁性材料及器件》2023年第5期12-17,共6页Journal of Magnetic Materials and Devices

基　　金：国防基础科研计划资助项目(2021SK−024)。

摘　　要：采用固相反应法成功制备了Sm^(3+)离子掺杂的NiZn铁氧体材料Ni_(0.2)SmxZn_(0.6−1.5x)Cu_(0.2)Fe_(2)O_(4)(x=0.00,0.05,0.10,0.15)。Sm^(3+)掺杂量对NiZn铁氧体的微观形貌和饱和磁化强度Ms产生明显影响,饱和磁化强度Ms随着Sm^(3+)掺杂量的增加而增大。实验结果表明,掺杂Sm^(3+)有效调控了NiZn铁氧体的电磁特性,当掺杂量为x=0.05时,NiZn铁氧体在低的频率下表现出最强的磁损耗和最优异的阻抗匹配,同时电磁衰减特性也得到明显提升,这极大增强了NiZn铁氧体对电磁波的吸收能力,显著拓宽了材料的有效吸波带宽,其最强反射损耗为−45 dB@4.5 mm,最大有效带宽为926 MHz@5 mm。Sm^(3+)ion doped NiZn ferrite material Ni_(0.2)SmxZn_(0.6−1.5x)Cu_(0.2)Fe_(2)O_(4)(x=0.00,0.05,0.10,0.15)was successfully prepared by solid-state reaction method.Different Sm^(3+)doping amount has a significant effect on the micro-morphology and saturation magnetization Ms of NiZn ferrite.The saturation magnetization Ms increases with the increase of Sm^(3+)doping amount.The experimental results show that doping Sm^(3+)ions effectively regulates the electromagnetic characteristics of NiZn ferrite.When the doping amount is 0.05,NiZn ferrite exhibits the strongest magnetic losses and the best impedance matching at low frequencies.At the same time,the electromagnetic attenuation characteristics are also significantly improved,which greatly enhances the electromagnetic wave absorption ability of NiZn ferrite,significantly broadens the effective absorption bandwidth of the material,and its strongest reflection loss is−45 dB@4.5 mm,the maximum effective bandwidth is 926 MHz@5 mm.

关 键 词：NIZN铁氧体 Sm^(3+)掺杂 吸波 带宽 反射损耗 

分 类 号：TM25[一般工业技术—材料科学与工程]