Increased Electromagnetic Wave Absorption through Controlled Sonication Processing on BaFe11.2Mg0.4Al0.4O19 Nanoparticles

Electromagnetic waves show rapid development in electronics, telecommunications, and the military. One of efforts to overcome effects electromagnetic interference is by developing microwave-absorbing materials. Barium hexaferrite best candidate for as an absorber material. Microwave absorption barium can be increased through Mg-Al doping reducing particle size. This study aimed analyze sonication parameters reduce size combining destruction methods using mechanical alloying followed high-power ultrasonic irradiation. was synthesized mixing stoichiometric BaCO3, Fe2O3, Al2O3, MgO (Sigma-Aldrich p.a 99%) (Mg-Al 0.4%wt). The samples continued sintering process at 1200 °C 2 h grow crystal embryos. optimal were a transducer:reactor diameter ratio 1:10, density 5 g/250 mL, adding non-ionic surfactant 0.01% amplitude 55% time 8 h. These resulted saturation magnetization 18.50 emu/g coercivity 0.08 Tesla. reduction BHF doped with successfully up 21 nm, resulting reflection loss −40.8697 dB 11.896 GHz (x-band, 8–12 GHz). nanoparticles effectively absorbed 99.99% waves.