Abstract: 1. A broadband microwave absorber comprising a sheet of magnetic ceramic material having the general formula, MOFe.sub.2 O.sub.3, in which Fe.sub.2 O.sub.

Abstract: 2. Combined layers in a microwave radiation absorber comprising a layer of ielectric material of relatively high dielectric constant and a layer of magnetic material having a relatively high coefficient of magnetic permeability, said layers being substantially parallel and contiguous to one another and adapted to be positioned at a radiation reflecting surface, said layer of magnetic material being adapted to be contiguous to said reflecting surface, said layers having a thickness approximately a quarter wavelength of microwave radiation as measured within said combined layers.