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W-type barium ferrite(Ba Zn2Fe16O27)/antimony-doped tin oxide(ATO) composite absorbing materials were synthesized by co-precipitation method, using Ba Zn2Fe16O27 prepared by traditional solid method and SnCl4·5H2O, SbCl3 as main raw materials. The structure and morphology of the composites were characterized using X-ray diffraction(XRD), scanning electron microscopy(SEM). The result shows that Ba Zn2Fe16O27/ATO composites were obtained by co-precipitation method, and ATO nano-particles were coated on the surface of Ba Zn2Fe16O27 ferrite. The complex permittivity and complex permeability of Ba Zn2Fe16O27/ATO composite absorbing materials at the frequency range from 2 to 18 GHz were analyzed by vector network analyzer. It is indicated that ATO has strong dielectric property and ferrite shows superior magnetic performance. The result shows that the complex permittivity and dielectric loss of the Ba Zn2Fe16O27/ATO composite absorbing materials are higher than the pure ferrite, and the complex permeability and magnetic loss are higher than the pure ferrite and the pure ATO. When the mole ratio of Ba Zn2Fe16O27/ATO is 1:2, the minimum reflection loss is about-31.14 d B at 12.4 GHz, moreover, the absorption bandwidth reaches 9.6 GHz when RL is-10 d B in the measured frequency range of Ku-band.
W-type barium ferrite (Ba Zn2 Fe16 O27) / antimony-doped tin oxide (ATO) composite absorbing materials were synthesized by co-precipitation method, using Ba Zn2 Fe16 O27 prepared by the traditional solid method and SnCl4 · 5H2O, SbCl3 as main raw materials. and morphology of the composites were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM). The result shows that Ba Zn2Fe16O27 / ATO composites were obtained by co-precipitation method, and ATO nano-particles were coated on the surface of Ba Zn2Fe16O27 ferrite. The complex permittivity and complex permeability of Ba Zn2Fe16O27 / ATO composite absorbing materials at the frequency range from 2 to 18 GHz were analyzed by vector network analyzer. It is indicated that ATO has a strong dielectric property and ferrite shows superior magnetic performance . The result shows that the complex permittivity and dielectric loss of the Ba Zn2Fe16O27 / ATO composite absorbing materials are higher than the pure ferrite, and the com plex permeability and magnetic loss are higher than the pure ferrite and the pure ATO. When the mole ratio of Ba Zn2Fe16O27 / ATO is 1: 2, the minimum reflection loss is about -31.14 d B at 12.4 GHz, moreover, the absorption bandwidth reaches 9.6 GHz when RL is-10 d B in the measured frequency range of Ku-band.