Abstract
Microwave absorbers are an important topic of interest to mitigate electromagnetic interference. Here, we have investigated electromagnetic absorption properties of Ba0.5Sr0.5CoxInxFe12−2xO19 hexaferrite prepared by the conventional ceramic method. M-type hexagonal structure in the compositions was confirmed from x-ray diffraction analysis. The role of Co2+ and In3+, thickness of composition and frequency on the electromagnetic absorption in the ferrite compositions has been explored from 8.2 GHz to 12.4 GHz. It was found that both Co2+-In3+ increased microwave/electromagnetic absorption with broad bandwidth, decreased the thickness and enhanced impedance matching. The reflection loss of −39.99 dB was noted in the composition x = 0.2 for the thickness of 1.6 mm and a frequency of 11.14 GHz. The results conclude that investigated compositions of Ba0.5Sr0.5CoxInxFe12−2xO19 ferrite ameliorate absorber applications.
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Kaur, H., Marwaha, A., Singh, C. et al. Tailoring of Electromagnetic Absorption in Substituted Hexaferrites from 8.2 GHz to 12.4 GHz. J. Electron. Mater. 49, 1646–1653 (2020). https://doi.org/10.1007/s11664-019-07498-8
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DOI: https://doi.org/10.1007/s11664-019-07498-8