Abstract
The dependence of the uniform precession amplitude and susceptibilityχ″ at ferromagnetic resonance on the high-frequency fieldh is discussed on the basis of an equation for the energy balance and classical equations for the spin wave amplitudes. The dependenceχ″ (h) is first determined in the lowest non-linear approximation. According to these calculations, the initial decline of the susceptibility differs from Schlömann's quadratic law. The influence of other nonlinear interactions between spin wavesk≠0 is then discussed on a certain special assumption of the type of two-magnon scattering. It is shown that such interactions can lead to the appearance of a maximum in the h.f. field dependence of the uniform precession amplitude.
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Loos, J. The dependence of susceptibility on the high-frequency field at ferromagnetic resonance. Czech J Phys 17, 595–612 (1967). https://doi.org/10.1007/BF01698525
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DOI: https://doi.org/10.1007/BF01698525