Researched and isofrequency dispersion characteristics of surface spin waves in magnetized about the structure of the metal-dielectric-ferrite-dielectric-metal. It is found that the dispersion of the surface spin waves in this structure can be either saddle-shaped region and the region of the maxima, and near the last isofrequency dependences have a form similar to the ellipse, or oval. Discovered loop-like change of isofrequency dependences of spin waves in a certain frequency interval, and the beginning of the loop is always located at the value of the wave number k → 0.
structure metal-dielectric-ferrite-dielectric-metal, the spin-wave dispersion surface, folded change of the isofrequency dependence
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