反应温度对NiCuZn铁氧体结构和磁性的影响  

Influence of reaction temperature on structure and magnetization of NiCuZn ferrite powders

作　　者：张变芳[1] 刘力虎[2] 王振彪[1] 申俊杰[1] 李同锴[1] 

机构地区：[1]石家庄铁道学院数理系,河北石家庄050043 [2]河北师范大学物理学院,河北石家庄050016

出　　处：《材料热处理学报》2009年第6期13-15,20,共4页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金项目(50625518)

摘　　要：在反应温度分别为303,323和343K的条件下,用溶胶-凝胶法制备了三种Ni0.2Cu0.2Zn0.6Fe2O4铁氧体前驱体。然后把三种前驱体在873K烧结5h后,再在1273K烧结3h。借助于TG-DSC、XRD、SEM、VSM技术,对干凝胶的热分解过程、产物的物相、微观结构和磁性能进行研究。结果表明,反应温度为303K制备的NiCuZn铁氧体粉体为单一的尖晶石结构,而在反应温度为323和343K制备的两种粉体却是Ni0.2Cu0.2Zn0.6Fe2O4,、ZnO和Fe2O3混合体。Three precursors of Ni0.2Cu0.2Zn（0.6）Fe2O4 ferrite powders were prepared by sol-gel method at 303,323 and 343K,respectively.The precursors were calcined at 873K for 5h,and then calcined at 1273K for 3h.The themal decomposition of the gels,phases,microstructure and magnetic properties of the NiCuZn ferrite were investigated by means of TG-DSC,XRD,SEM and VSM.The results show that the NiCuZn ferrite powder formed at 303K is single spinel phase and the other two powders formed at 323K and 343K are not single spinal structure but a mixture of Ni（0.2）Cu（0.2）Zn（0.6）Fe2O4,ZnO and Fe2O3.

关 键 词：铁氧体 前驱体 尖晶石结构 反应温度 

分 类 号：TQ138[化学工程—无机化工]