The effect of parametrically excited spin waves on the dispersion and damping of magnetostatic surface waves in ferrite films
The effect of parametrically excited spin waves on the dispersion and damping of magnetostatic surface waves in ferrite films
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DOI：
10.1134/1.558780
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发表时间：
1999-01-01
影响因子：
1.1
通讯作者：
Filimonov, YA
中科院分区：
文献类型：
--
作者：
Kazakov, GT;Kozhevnikov, AV;Filimonov, YA
本文描述了铁氧体薄膜中三、四磁振子与频率为f（p）的辅助表面静磁泵波激发的参量自旋波相互作用引起的静磁表面波色散和阻尼变化的实验研究。色散和阻尼的变化分别用表面静磁波波数的真实的部分的变化Δ k '和虚部分的变化Δ k“来确定。Δ k '和Δ k '值由表面静磁波的相位增量Δ φ和振幅增量Δ A的变化与膜的非平衡截面的长度L的比值确定，在非平衡截面处存在参数自旋波。研究发现，当泵浦波和表面静磁探测波都经历三磁振子衰减过程时，探测波可以改变薄膜中参量自旋波的分布. (C)1999年美国物理学会。[S1063-7761（99）02601-3]。
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 Delta k ' in the real part and Delta k " in the imaginary part of the wave number of the surface magnetostatic wave. The Delta k ' and Delta k ' values were determined from the ratio of the changes of the phase increment Delta phi and the amplitude increment Delta A 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. (C) 1999 American Institute of Physics. [S1063-7761(99)02601-3].