Microwave Properties of Sandwich Structure Based on Iron and Barium Nanoparticles
The high frequency intrinsic and effective permeability was calculated for spherical iron and barium particles in a nonmagnetic matrix (epoxy resin) by using the combination of Landau-Lifshitz-Gilbert equation and extended Bruggeman’s effective medium theory with the consideration of the skin effect. It was found that the microwave properties of the composite were influenced by many parameters, such as damping parameter, volume fractions and size of magnetic components. The sandwich microwave absorber with reflection loss < −10 dB over the range of 6-22 GHz was achieved. The thickness of absorber is only 4.25 mm.
A.V. Babushkin "Microwave Properties of Sandwich Structure Based on Iron and Barium Nanoparticles ", Solid State Phenomena, Vols. 152-153, pp. 337-340, 2009