Abstract: The authors’ theoretical investigation on the high-frequency response of magnetized metallic magnetic films showed that magnetic films may become left-handed materials (LHMs) near the ferromagnetic resonance frequency of incident waves with right-handed circular polarization (RCP) and linear polarization (LP). The frequency range where LHM exists depends on the waves polarization, the magnetic damping coefficient, and the ferromagnetic characteristic frequency ω_m of the film. There also exists a critical damping coefficient α_c, above which the left-handed properties disappear completely.

Key words: Left-handed materials (LHMs), Magnetic thin film, Ferromagnetic resonance frequency

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