The role of matching thickness on the wideband electromagnetic wave suppresser using single layer doped barium ferrite

The effect of Mg(2+), Co(2+) and Ti(4+) substitution on microwave absorption has been studied for BaMg(0.5)Co(0.5)Ti(1.0)Fe(10)O(19) ferrite-acrylic resin composite in frequency range from 13 to 20 GHz. X-ray diffraction (XRD), scanning electron microscopy (SEM), vector network analysis and vibrating sample magnetometry (VSM) were employed to analyze structure, electromagnetic and microwave absorption properties of prepared ferrite. The obtained results of reflectivity demonstrate that by varying matching thickness along with weight percentage of ferrite to acrylic resin, the bandwidth coupled with reflection loss values of prepared composites can be easily tuned. Based on microwave measurement on reflectivity, it is found that BaMg(0.5)Co(0.5)Ti(1.0)Fe(10)O(19) is a good candidate for wideband electromagnetic compatibility and other practical applications at high frequency. (C) 2010 Elsevier B.V. All rights reserved.