Spectrum of elementary excitations with spin reorientation in ferromagnets
V. G. BaryakhtarPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskА. М. ГришинPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskV. F. Drobot’koPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, Donetsk
ABI
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An essential difference between spin reorientation in ferromagnetic metals and insulators is demonstrated. At low frequencies the spectrum and wave transformations are affected mainly by the interaction of magnetic oscillations with the slow wave of minimum phase velocity. In insulators this is the magnetoacoustic interaction, in metals it is the coupling of magnons to damped electromagnetic oscillations.
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