软磁锰锌铁氧体的制备及性能研究  

Studies on Synthesis and Properties of MnZn Soft Ferrite

作　　者：焦永芳[1] 张会[1] 王蕾[1] 郭娟[1] 方庆清[2] 

机构地区：[1]天津科技大学理学院,天津300457 [2]安徽大学教育部光电信息获取与控制重点实验室,安徽合肥230039

出　　处：《功能材料与器件学报》2011年第4期392-396,共5页Journal of Functional Materials and Devices

基　　金：天津科技大学实验室开放基金资助项目(项目编号:1011A108)

摘　　要：采用化学共沉淀法和真空烧结工艺制备了尖晶石型锰锌铁氧体系列样品,研究了ZnO含量及烧结温度对样品性能的影响.结果表明:随着ZnO含量增加,样品的μi逐渐增加,但BS及Tc随之下降;在1400℃附近能获得较好的磁性能。当ZnO含量=24.5mol%时,样品的μi=7041,BS=310.9mT,HC=4.3A/m。A series of spinel MnZn ferrites were prepared by chemical co-precipitation process,sintered in air,and cooled in vacuum.The effect of ZnO content and sintering process on the properties of the samples was discussed.With the increase of ZnO content,the initial permeability μi is greatly enhanced while the saturation magnetization BS and the Curie temperature Tc falls down.It is found that higher saturation magnetization Bs and initial permeability μi can be achieved simultaneously when the sintering temperature is about 1400℃;The sample of ZnO=24.5mol% has the value of μi=7041,BS=310.9mT,HC=4.3A/m.

关 键 词：软磁铁氧体 化学共沉法 磁性能 

分 类 号：TM277[一般工业技术—材料科学与工程]