Abstract
This paper describes an experimental study of variations of the dispersion and damping of magnetostatic surface waves in ferrite films, caused by three-and four-magnon interactions with parametric spin waves excited by an auxiliary surface magnetostatic pump wave with frequency f p. The variations in the dispersion and damping were identified, respectively, with variations Δk″ in the real part and Δk′ in the imaginary part of the wave number of the surface magnetostatic wave. The Δk″ and Δk′ values were determined from the ratio of the changes of the phase increment Δφ and the amplitude increment ΔA of the surface magnetostatic wave to the length L of the nonequilibrium section of the film, where the parametric spin waves exist. It is found that, when three-magnon decay processes are allowed for the pump wave and the surface magnetostatic probe wave, the probe wave can substantially alter the distribution of the parametric spin waves in the film.
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Zh. Éksp. Teor. Fiz. 115, 318–332 (January 1999)
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Kazakov, G.T., Kozhevnikov, A.V. & Filimonov, Y.A. The effect of parametrically excited spin waves on the dispersion and damping of magnetostatic surface waves in ferrite films. J. Exp. Theor. Phys. 88, 174–181 (1999). https://doi.org/10.1134/1.558780
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DOI: https://doi.org/10.1134/1.558780