For a broader absorption bandwidth with smaller reflection loss(RL) in electromagnetic absorber, the metal ions(Ni~(2+), Mn~(2+), Co~(2+)) and titanium ion(Ti~(4+)) were employed to partially replace the iron ions(Fe~(3+)) in BaFe10 O19, and the doped barium hexaferrite(BaMn_(0.1)Ni_(0.1)Co_(0.8)TiFe_(10)O_(19)) powders were synthesized via the sol-gel combustion method. Subsequently, the microwave absorbing composites were prepared by mixing the ferrite powders with the paraffin. It was found that the comp...