Abstract
Mn, Ti substituted barium ferrite (BaFe12−x (Mn0.5Ti0.5) x O19) was fabricated by solid state reaction, which shows high efficiency and wide band microwave absorption. The minimum reflection loss (R L ) reaches up to −31 dB and the bandwidth below −10 dB almost covers the whole X band. The enhancement of microwave absorption is attributed to the improvement of dielectric loss and magnetic loss. The imaginary permeability possesses a perfect resonance peak due to the response frequency shifting towards lower frequency by Mn, Ti substitution. The imaginary permittivity reaches up to 0.5. The results show a promising feasible route to tune the electromagnetic properties and develop high efficient absorbers.
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This project was financially supported by the National Natural Science Foundation of P. R. China (Grant Nos. 51372282 and 51132002).
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Ji, KK., Li, Y. & Cao, MS. Mn, Ti substituted barium ferrite to tune electromagnetic properties and enhanced microwave absorption. J Mater Sci: Mater Electron 27, 5128–5135 (2016). https://doi.org/10.1007/s10854-016-4404-x
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DOI: https://doi.org/10.1007/s10854-016-4404-x