Skin effect under the conditions of ferromagnetic and spin-wave resonance

An expression for the electromagnetic field penetration depth in a metallic magnetic layer is derived taking into account the complexity of the high-f requency permeability under the conditions of ferromagnetic and spin-wave r esonance. The frequency dependences of the skin depth and its dependences o n the magnitude and type of spin pinning are determined from a numerical an alysis of the solutions of the motion equation for magnetization. Some feat ures of the dependences associated with the nature of the spin-wave spectru m are revealed. (C) 2001 MAIK "Nauka/Interperiodica".