Bi_2O_3掺杂对NiCuZn铁氧体材料磁性能的影响  

Effect of Bi_2O_3 dopant on the magnetic properties of NiCuZn ferrite material

作　　者：李强[1] 李元勋[1,2] 郁国良[1] 左林[1] 王雨[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054 [2]东莞电子科技大学电子信息工程研究院,广东东莞523808

出　　处：《磁性材料及器件》2014年第1期60-62,78,共4页Journal of Magnetic Materials and Devices

基　　金：国家自然科学青年基金资助项目(61001025);国家重点实验室开放基金资助项目(KFJJ201102);中央高校基本科研业务费资助项目(ZYGX2011X006)

摘　　要：采用溶胶-凝胶(Sol-gel)法制备Ni0.2Cu0.2Zn0.6Fe2O4铁氧体材料。基于低温共烧铁氧体(LTCF)技术的要求,研究了掺杂Bi2O3对NiCuZn铁氧体材料的微结构和电磁性能的影响。结果表明,采用溶胶-凝胶法制备的NiCuZn材料,通过掺杂Bi2O3助烧剂,880℃低温烧结4h,已经生成所要的尖晶石相铁氧体;SEM显示随着Bi2O3的加入,NiCuZn铁氧体晶粒逐渐变大,生长均匀。在磁性能方面,添加3wt%Bi2O3时饱和磁化强度达到了77.03 A·m2/kg。Bi2O3在促进NiCuZn铁氧体烧结的同时,增大了材料的磁导率。Ni0.2Cu0.2Zn0.6Fe2O4 ferrite materials were synthesized by sol-gel method. Based on requirement for low temperature co-fired ferrite （LTCF） technology, we investigated the influence of Bi2O3 dopant on microstructure and magnetic properties of NiCuZn ferrites. The result shows that NiCuZn ferrites could be successfully synthesized by sol-gel method in the condition of doped Bi2O3, sintering at 880℃ for 4h. With increasing Bi2O3 content, the grain of samples become bigger and more symmetrical. The saturation magnetization is 77.03·m2/kg for sample with Bi2O3 content of 3wt%. Bi2O3 dopant promotes the sintering process and improves the initial permeability of ferrites.

关 键 词：NICUZN铁氧体 溶胶-凝胶法 Bi2O3掺杂 显微结构 磁性能 

分 类 号：TM277.1[一般工业技术—材料科学与工程]