Preparation and electromagnetic properties of nanosized Co0.5Zn0.5Fe2O4 ferrite

Nanosized CoZnFeOferrite was prepared by chemical co-precipitation method.The samples were characterized by X-ray diffraction(XRD),fieldemission transmission electron microscopy(FETEM),vibrating sample magnetometer(VSM) and network analyzer.TEM analysis indicates that the diameter of as-prepared powder is about 20-30 nm.The saturation magnetization of nanosized CoZnFeOferrite is74.01 mA·m~2·g.The complex permittivity and complex permeability of the Co-Zn ferrite were measured by vector network analyzer in the frequency range of 2.0-18.0 GHz,and the reflection loss(RL) was investigated according to the wave transmission theory.The results show that the maximum reflection loss reaches-13.7 dB at 6.8 GHz and the bandwidth of reflection loss less than-10 dB reaches3.8 GHz.The as-prepared nanosized CoZnFeOferrite can be potentially used as an excellent microwave absorber in the C-band.