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Spin-Wave Resonance in One-Dimensional Magnonic Crystals by an Example of Multilayer Co–P Films
Physics of the Solid State ( IF 0.9 ) Pub Date : 2020-10-08 , DOI: 10.1134/s1063783420100121
R. S. Iskhakov , S. V. Stolyar , L. A. Chekanova , I. G. Vazhenina

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 Hn(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 Hn of the spin-wave modes on mode number n has the form of Hn(n) ~ n2/3. 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:

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 ÑÑ)〜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HÑ 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。

更新日期:2020-10-08
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