Modeling of interaction of microwaves with nanocomposites and 3D nanostructures based on magnetic nanoparticle-filled carbon nanotube arrays

The propagation, the diffraction of electromagnetic waves (EMWs) and their resonance interactions with the magnetic nanocomposites and 3D nanostructures based on the 3D arrays of magnetic nanoparticle-filled carbon nanotubes (MNCNTs) are modeled by solving the Maxwell´s equations with electrodynamic boundary conditions, complemented by the Landau-Lifshitz equation. Using the numerical method of autonomous blocks with Floquet channels (FABs) the complex wave number of quasi-extraordinary electromagnetic wave (EMW) in the periodic 3D arrays of MNCNTs with different filling factor of the magnetic component depending on bias magnetic field H₀ is determined at a frequency of 26 GHz. The transmission coefficients for the H₁₀ mode in a waveguide loaded with a 3D magnetic nanostructure depending on the transverse bias magnetic field H₀ were calculated at 26 GHz for several values of the filling factor of magnetic nanoparticles. The nonlinearity thresholds of array of MNCNTs are determined by computing the bifurcation points of the nonlinear Maxwell´s operator.