Synthesis and Microwave absorption properties of Co_2Z barium ferrite by salt-molten method

摘要

In this work, the Z-type barium ferrite of single phase was prepared by the salt-molten method which was a novel, economical and environmentally friendly method. The results showed that the salt was helpful to get single phase and could effectively modify the shape of the powder. Based on the microwave measurement, reflection losses exceeding -20 dB of Co_2Z composite were obtained in the frequency range of 4.1-14.5 GHz for absorber thicknesses of 2.1-3.5 mm and the minimum value of the reflection loss was -42.9 dB at 4.9 GHz for the thickness of 2.9 mm. For those unique properties, C02Z could be a good candidate for electromagnetic (EM) materials and other practical applications at the high frequency.