Investigation of Resonance Interactions of Microwaves with 3D Magnetic Nanocomposites Using the Probabilistic Model

摘要

A probabilistic approach to model the resonance interactions of electromagnetic waves (EMWs) with 3D magnetic opal nanocomposites has been developed. We consider the value of the ferromagnetic resonance (FMR) magnetic field H_τ of magnetic nanoparticles as a random quantity having a normal distribution because the FMR fields are determined by the internal magnetic field depending on the shape of particles. The numerical approach is based on the decomposition of domain of the 3D magnetic nanocomposite into autonomous blocks with Floquet channels. We find the expectation values of the components of the effective permeability tensor as a function of DC magnetic field The influence of the damping parameter of magnetic nanoparticles and the standard deviation of the random quantity H_r are analyzed at a frequency 26 GHz. The agreement of numerical results with the measured values FMR results shows the robustness of the developed probabilistic algorithm.