Influence of shape anisotropy on microwave complex permeability in carbonyl iron flakes/epoxy resin composites

To explore the mechanism of carbonyl iron flake composites formicrowave complex permeability, this paper investigates the featureof the flakes. The shape anisotropy was certified by the results ofthe magnetization hysteresis loops and the M"{o}ssbauer spectra.Furthermore, the shape anisotropy was used to explain the origin ofcomposite microwave performance, and the calculated results agreewith the experiment. It is believed that the shape anisotropydominates microwave complex permeability, and the natural resonanceplays main role in flake.