Vol. 6, №2, 2014


Mikhail G. Evtikhov

Kotel’nikov Institute of Radio-Engineering and Electronics, Fryazino Branch, Russian Academy of Science, http://fire.relarn.ru
141120 Fryazino, Moscow region, Russian Federation

Received 24.11.2014
Abstract. Surface waves in thin isotropic ferromagnet slab magnetized in its plane are considered in the magnetostatic limit. Magnetostatic waves are considered as a type of spin waves. The special attention is given to the propagation directions of the waves, which are not orthogonal and parallel to the magnetization of the film. Two features of these waves have not been discussed earlier: the wave resonance with orientation and the existence of a new type of the surface magnetostatic waves. The position of the resonance peak depends not only on the frequency, but also on the direction of wave propagation, and we use the term "wave resonance with orientation”. The wave resonance with orientation predicted theoretically on the basis of the dispersion relation of Damon-Eshbach [5]. The existence of a new type of surface waves (waves of second type) also follows from [5]. These waves propagate almost parallel to the magnetization of the film. The frequency of waves of second type can greatly exceed the frequency of Damon-Eshbach. The frequency of Damon- Eshbach limits previously studied surface waves (of the first type). Resonance with the orientation of the waves of the second type is also considered. Estimates and graphics are provided for the parameters of YIG films [7].

Keywords: magnetostatic waves, spin waves, isotropic ferromagnet, magnetic films, spectra of electromagnetic waves

PACS: 02.30.Mv, 76.50. + G

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