Abstract：ZnFe2O4 nanoparticles were synthesized by polyol process. The influence of reaction conditions, such as the refluxing time, heating rates and refluxing temperature on the size, morphology and magnetic properties was investigated. The structure, morphology and magnetic properties of resultant products were characterized by X-ray diffraction(XRD), transmission electron microscopy(TEM), fourier transform infrared (FTIR) and vector network analyzer. The results show that the obtained ZnFe2O4 nanoparticles have uniform size and good dispersibility. The particle size increases with the increase of the reflux time and the reflux temperature. ZnFe2O4 nano ferrites synthesized at the refluxing temperature of 270℃ have maximum saturation magnetization of 35.09A·m2/kg with less remanence and the coercive force is 4.2kA/m.ZnFe2O4 nanoferrites show a typical ferrimagnetic behavior.
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