Abstract
The problem of transmission of electromagnetic wave through a thin conductive ferromagnetic layer is considered here with the assumption that its thickness is less than skin depth. It is supposed that the conductive film is sputtered on a dielectric substrate. Solution of boundary problem jointly with the spectrum of eigenmodes under magnetic resonance condition and spin pinning conditions gives an opportunity to develop the algorithm of numerical calculation of the transmission and reflection coefficients. Transmission of microwaves through thin ferromagnetic films has been experimentally studied. The experimental investigations of millimeter waveband penetration through the permalloy Fe 19 Ni 81 films have been carried out. The shape of ferromagnetic and spin-wave resonance line in transmission coefficient is studied. The magnetic damping constant is estimated from the linewidth.
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