Size and Shape Effects in the Diffraction of Electromagnetic Waves on Magnetic Nanowire Arrays at Photonic Frequencies

摘要

Rigorous mathematical modeling of the diffraction of electromagnetic waves on magnetic nanoarrays was performed by solving the 3D diffraction boundary problem for Maxwell's equations with electrodynamic boundary conditions, complemented by the Landau-Lifshitz equation with the exchange term, taking into account constrained geometries. The modulus of transmission |R_(21)| of iron nanowire arrays, depending on the bias magnetic field, for various nanowires diameter and array periodicity were obtained at f = 30 THz. The mathematical modeling shows that the scattering parameters of magnetic nanowire arrays strongly depend on the value of the bias magnetic field for different wire diameter/periodicity ratios.