摘要
采用化学共沉淀法制备了镧掺杂的M型钡铁氧体粉体BaLaxFel2-xO19(x=0～0.5)。运用X射线衍射仪(XRD)以及振动样品磁强计(VSM)等仪器对产物进行了结构和磁性等的表征。结果表明,在研究范围内,La3+掺杂量对产物物相没有影响,但随着离子掺杂量的增多,产品的平均粒径略有增大;La3+掺杂进入钡铁氧体后会产生一定的晶格畸变,造成晶面间距的增大;随着La3+掺杂量的增加,产品的密度和电阻率逐渐减小,饱和磁化强度和剩余磁化强度均有所下降,矫顽力也有一定程度的降低。
Ba - M - type hexagonal ferrites （ BaFel2019 ） with different doping amount of La3 ＋ ion BaLaxF12-xO19 （ x = 0 0. 5 ） have been prepared by co - precipitation method. The phase structure and magnetic properties of samples were studied by X - ray diffraction and vibrating sample magnetometer and so on. The results showed that the doping amount of La3 ＋ ion in the range of 0 - 0.5 has no influence on purity of product, but average crystal size of the samples increased slightly with the increasing of doping amount of La3 ＋ ion; La3 ＋ ion doped into barium ferrite crystal lattice will have some distortion, resulting in the increase of interplanar spacing; meanwhile, product density, electrical resistivity, saturation magnetization, remanent magnetization and coercivity decreased respectively with the increasing amount of doping ions.
出处
《稀土》
EI
CAS
CSCD
北大核心
2012年第6期70-74,共5页
Chinese Rare Earths
基金
中南大学贵重仪器设备开放共享基金(CSUZC2012040)
关键词
镧离子掺杂
M型钡铁氧体
磁性能
La3＋ doping
Ba - M - type ferrites
magnetic properties
