文摘
Due to cation distribution, magnetic anisotropy drops in Y and La doped samples. Microwave permeability spectra shift to lower frequencies with rare earth doping. Permittivity is increased due to crystal modifications, creating dipoles. Return losses above 40 dB from 4 to 19 GHz are attained when thickness equals λ/4. The multiple reflections cancellation is favoured by high imaginary μ′′.