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采用沸腾回流法制备了Ni0.4Zn0.35Co0.25LaxFe2-xO4/碳纳米管(CNTs)复合吸波材料,考察了镧(La)的掺杂量对复合材料磁性及吸波性能的影响。研究表明:沸腾回流法制备的铁氧体为单相尖晶石结构,纳米铁氧体粒子成功包覆在碳纳米管上。La3+掺杂量x=0.07时,产物的矫顽力(Hc)最大,且吸波性能最佳。
Ni0.4Zn0.35Co0.25LaxFe2-xO4 / CNTs composite microwave absorbing materials were prepared by boiling reflux method. The effects of La dosage on magnetic properties and microwave absorbing properties of the composites were investigated. The results show that the ferrite prepared by boiling-reflux method is a single-phase spinel structure, and the nano-ferrite particles are successfully coated on the carbon nanotubes. La3 + doping amount x = 0.07, the product of the coercive force (Hc) maximum, and absorbing the best performance.