Abstract
Fe-doped ZnO powders have been synthesized by the coprecipitation method at 600°C with various reaction time, using zinc nitrate as the staring material, urea as the precipitator, and ferric nitrate as the doping source, respectively. The phase and morphology of the prepared powders have been characterized by X-ray diffraction and scanning electron microscopy, respectively. It was found that the prepared product synthesized for 1h had a pure ZnO wurtzite structure and was a ZnO(Fe) solid solution powder. The real part, imaginary part, and dielectric loss of complex permittivity of prepared powders in the frequency range of 8.2–12.4GHz decreased with increasing reaction time. The average infrared emissivities of prepared powders at the waveband range of 8–14μm increased with extending reaction time.
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