采用共沉淀法成功制备出具有超顺磁性的纳米Fe3O4,并将Fe3O4与SrFe12O19复合制成复合吸波材料Fe3O4- SrFe12O19,利用X射线衍射仪(XRD)、透射电镜(TEM)、振动样品磁强计(VSM)和矢量网络分析仪(PNA)对产物的物相、显微结构、磁性能和吸波性能进行了表征与分析.结果表明,当Fe3O4与SrFe12O19质量比为1∶0.3时,Fe3 O4 - SrFe12 O19饱和磁化强度为11.1emu·g-1,矫顽力0.86 Oe,剩余磁化强度0.08 emu·g-1,其吸波性能最佳,最大吸收峰值为-17.7 dB,-5 dB频宽为1.3 GHz,较Fe3O4和SrFe12O19的最大吸收峰值分别提高247％和185％,频带分别拓宽1.12 GHz和0.40 GHz.
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