Abstract

Layered magnetic films of Co–P alloy, which are sets of laminates with certain atomic and chemical structures, have been investigated by spin-wave resonance. Coatings of two types were synthesized: a magnonic crystal (amorphous Co(P)/fcc Co(P))_N and gradient Co(P) films. They exhibit two different modifications of the spin-wave resonance (SWR) spectrum. In the first case, the SWR spectrum is described as H_n(n) ~ n² with a modification caused by the formation of the first stop band of the magnonic crystal. In the second case, the dependence of resonance fields H_n of the spin-wave modes on mode number n has the form of H_n(n) ~ n^2/3. Thermal annealing leads to crystallization (amorphous alloy → fcc) and causes transformation of the layered films to the films of single-phase Co–P alloys, which is accompanied by a change in the shapes of the SWR spectra and occurrence of a “exchange kink” spectral modification.

中文翻译：

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一维强磁晶体中的自旋波谐振，以多层Co-P膜为例

摘要

通过自旋波共振研究了Co-P合金的多层磁性膜，这些磁性膜是具有一定原子和化学结构的叠层结构。合成了两种类型的涂层：镁磁晶体（非晶Co（P）/ fcc Co（P））_N和梯度Co（P）膜。它们展现了自旋波共振（SWR）谱的两种不同的修改。在第一种情况中，SWR频谱被描述为ħ _Ñ（Ñ）〜Ñ ²所造成的晶体波角动量的第一站频带的形成的变形例。在第二种情况下，自旋波模式的共振场H _n对模式编号n的依赖性为H_Ñ（ Ñ）〜 Ñ ^2/3。热退火导致结晶（非晶态合金→fcc），并导致层状膜转变为单相Co-P合金膜，这伴随着SWR光谱形状的变化和“交换扭结”的发生频谱修改。