Mn, Ti substituted barium ferrite to tune electromagnetic properties and enhanced microwave absorption
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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.
KeywordsResonance Peak CoFe2O4 Microwave Absorption Magnetic Loss Electromagnetic Property
This project was financially supported by the National Natural Science Foundation of P. R. China (Grant Nos. 51372282 and 51132002).
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