MoO_3掺杂对锰锌铁氧体显微结构与磁性能的影响  

Influences of MoO_3 doping on the microstructure and magnetic properties of MnZn ferrite materials

作　　者：宋久龙 陈文革[1] 吴丹[1] SONG Jiu-long CHEN Wen-ge WU Dan(School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China)

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《磁性材料及器件》2017年第3期10-13,共4页Journal of Magnetic Materials and Devices

摘　　要：以Fe_2O_3、MnO、ZnO粉体为原料,采用固相烧结法,通过一次球磨,850℃预烧并掺杂,二次球磨,1200℃烧结最后压制成型制得不同MoO_3掺杂量的锰锌铁氧体,运用SEM、XRD、VSM等手段研究该材料的组织与性能。结果表明,无论是否掺杂MoO_3,均生成了典型的尖晶石铁氧体相和Fe_2O_3相。材料的饱和磁化强度和磁导率随掺杂量增加先增大后减小,矫顽力和剩余磁化强度先减小后增大。表现为掺杂0.06wt% MoO_3的锰锌铁氧块体组织最为致密,磁性能达到最优,矫顽力及剩余磁化强度最小,磁导率和饱和磁化强度最大。In this paper, using Fe2O3, MnO, ZnO powder as raw material, MnZn Ferrite was prepared by solid phase sintering method, and characterized by SEM, X-ray diffraction, VSM etc. MnZn Ferrite was fabricated by first milling, pre-sintering at 850℃, doping, Secondary milling, sintering at 1200 ℃ and pressing. The experiment results show that whether MoO3 was doped or not, Mainly its metallographic structure consists of spinel ferrite and Fe2O3 phase. After doping MoO3, magnetic permeability and Saturation magnetization increases at first, then decreases with MoO3 content. But coercivity and residual magnetization decreases first and then increases with increasing the amount of MoO3 dopant. In addition, the sample has optimum microstructure and magnetic properties for MoO3 dopant of 0.06wt%, which has minimal coercive force, residual magnetization and maximum permeability, saturation magnetization.

关 键 词：锰锌铁氧体 MoO3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]