Effect of damping coefficient of precession on the transmission of electromagnetic waves through a structure containing ferromagnetic material waveguide”, Metamaterials

Abstract

The electromagnetic wave propagation through a structure consisting of left-handed material (LHM) and dielectric slabs embedded in vacuum is analysed theoretically and numerically. The LHM is composed of magnetized ferrites to provide a negative permeability and a wire array to provide a negative permittivity. Maxwell's equations are used to determine the electric and magnetic fields of the incident waves at each layer. Snell's law is applied and the boundary conditions are imposed at each layer interface to calculate the reflected, transmitted and loss powers of the structure. Numerical results are illustrated to show the effect of frequency, LHM thickness, applied magnetic fields and ferrite permittivity on the transmitted power of the structure as the damping coefficient of precession of ferrite changes. The obtained results are in agreement with the law of conservation of energy.