Zr4+doping-controlled permittivity and permeability of BaFe12−xZrxO19and the extraordinary EM absorption power in the millimeter wavelength frequency range

BaFe_12−xZr_xO₁₉with Zr⁴⁺at 4f₁and 2b sites exhibits an RL of ∼−40 dB and bandwidth of ∼10 GHz at ∼0.8 mm around the millimeter wavelength atmospheric window of 35 GHz.