NiO-CoO复合掺杂对高Bs低损耗MnZn铁氧体性能的影响  

Influence of Combined NiO and CoO Dopants on the Properties of Low-loss and High Bs MnZn Ferrites

作　　者：杨仕清[1] 于丕风 梁桃华[1] 孟奕峰[1] 杨清学[1] 唐明君[1] 余信云 

机构地区：[1]成都职业技术学院信息科学与技术研究院,四川成都610041 [2]电子科技大学微薄膜与集成器件国家重点实验室,610054 [3]成都恒力磁性材料有限公司,611430

出　　处：《成都职业技术学院学报》2014年第1期6-9,共4页

摘　　要：采用传统氧化物工艺制备了NiO-CoO掺杂的MnZn的软磁铁氧体材料。研究了NiO，CoO复合掺杂对高Bs低损耗的MnZn铁氧体微结构及磁性能的影响。结果表明，掺杂0．1wt％CoO和1．28wt％NiO的MnZn铁氧体晶粒生长均匀，具有较高饱和磁通密度。最低损耗点位于100℃。随着NiO掺杂量的增加，功耗谷点向高温方向移动。CoO掺杂导致密度增大，功耗降低。在钟罩炉中按特定烧结曲线烧结MnZn铁氧体具有较好的综合性能：μi=2198，Pcv=319kw／m^3，Bs=540mT（T=25℃）Bs=451mT（T=100℃）MnZn soft ferrite materials with NiO-CoO dopant were prepared by conventional oxide technique.The influences of CoO and NiO addition on the microstructure and magnetic properties of Low-loss and High Bs MnZn ferrites were investigated. It is confirmed that the sample with CoO addition of 0. 1wt% and NiO addition of 1.28wt% ,homogeneous grains are formed and has high saturation magnetic flux density. The low loss point is located at 100℃. Valley point of power loss shifts to higher temperature with increasing of NiO dopant. With increase of CoO addition, the power losses decrease and sintering density increases. The MnZn ferrite in a specific sintering curve has excellent comprehensive properties： μi=2198, Pcv=319 kw/m3, B s=45 1mT （T= 100 ℃ ）

关 键 词：MNZN功率铁氧体 饱和磁感应强度 磁性能 NiO-CoO掺杂 

分 类 号：TQ174.4[化学工程—陶瓷工业]