热处理对Ni_(0.25)Cu_(0.25)Zn_(0.5)Fe_2O_4铁氧体磁性能的影响  

Effect of Heat Treatment Temperature on Magnetic Properties of Ni_(0.25)Cu_(0.25)Zn_(0.5)Fe_2O_4

作　　者：李国福[1] 代建清[1] 陈世杰[1] 夏井兵[1] 陈辉[1] Li, Guo-Fu[1]; Dai, Jian-Qing[1]; Chen, Shi-Jie[1]; Xia, Jing-Bing[1]; Chen, Hui[1]

机构地区：[1]昆明理工大学材料科学与工程学院,昆明650093

出　　处：《人工晶体学报》2013年第4期727-731,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(619220170012)

摘　　要：利用化学共沉淀法制备了细小均匀的NiCuZn铁氧体前驱体粉体,通过XRD、TG-DSC、激光粒度仪(LPS)、精密阻抗分析仪、振动样品磁强计(VSM)等手段对粉体进行表征。研究前驱体的粒度分布及晶化过程,在不同的预烧温度下样品的磁性能,不同烧结温度的相结构、磁滞回线和磁性能。结果表明:前驱体粒度分布均匀,烧结后可以得到纯相的尖晶石型NiCuZn铁氧体。当预烧温度为500℃,烧结温度为900℃时,样品磁导率μi约为200,品质因数Q约为150,截止频率约为70 MHz。Nickel copper zinc ferrite precursor with small and uniform particles size was synthesized by chemical co-precipitation. The powder was analyzed by X-ray diffraction（ XRD）, thermo-gravimetry and differential scanning calorimeter （TG-DSC）, laser particle sizer, impedance analyzer and vibrating sample magnetometer （VSM）. The results show that the particle size of precursor is uniform. Pure phase spinel Nickle copper zinc ferrite powder was prepared after annealed at 500 0（]. After presintered at 500 ℃ and sintered at 900 ℃, NiCuZn ferrites have achieved excellent magnetics. NiCuZn ferrites sintered at 900 ℃ have achieved excellent magnetic properties. The initial permeability is 200, quality factor is 150 and the cut-off frequency is 70 MHz.

关 键 词：NICUZN铁氧体 化学共沉淀 温度 磁性能 

分 类 号：O614[理学—无机化学]