The Spectrum of Magnetostatic Waves in Ferromagnetic with Moving Periodical Domain Structure

E.A. Vilkov

doi:10.4028/www.scientific.net/SSP.152-153.345

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The Spectrum of Magnetostatic Waves in Ferromagnetic with Moving Periodical Domain Structure

Abstract:

The spectral properties of magnetostatic waves in a ferromagnet with a moving periodic domain structure are studied within the exchange-free magnetostatic approximation. It is demonstrated that the Doppler frequency shift caused by the domain-wall motion results in the splitting of the spectrum of each magnetostatic wave mode into two dispersion branches―high-frequency and low-frequency branches. It is found that the more the mode number, the more the separation between these branches with respect to the mode spectrum in the presence of the static domain structure. PACS numbers: 75.60.-d, 75.60.Ch, 75.70.Kw