Two Magnon Scattering Contribution to the Ferromagnetic Resonance Linewidth of Pt(Ir)/CoFeTaB/Ir(Pt) Thin Films

IF 1.1 4区物理与天体物理 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL

Applied Magnetic Resonance Pub Date : 2023-08-23 DOI:10.1007/s00723-023-01601-3

M. Tokaç, S. Kazan, B. Özkal, N. Al-jawfi, B. Rameev, B. Nicholson, A. T. Hindmarch

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Abstract

The magnetic properties of Pt/CoFeTaB/Ir and Ir/CoFeTaB/Pt trilayer thin films have been studied using angular- and temperature-dependent ferromagnetic resonance. This enables quantitative determination of the various contributions to the magnetic behavior, including separating, the effective Gilbert damping, inhomogeneous damping, and two-magnon-scattering contributions to the magnetic dissipation. As-deposited films show behavior consistent with significant incorporation of Ir into CoFeTaB only when the Ir layer is deposited first. Annealing of the structures at \(300\,^{\circ } \hbox {C}\) causes only minor structural and magnetic modification when Pt is deposited first, and more pronounced changes, attributed to thermally-driven out-diffusion of Ir from CoFeTaB, are found when Ir is deposited first. A holistic consideration of the magnetic resonance behavior can provide detailed information on the atomic-scale structure in magnetic thin-film devices.

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双磁振子散射对Pt(Ir)/CoFeTaB/Ir(Pt)薄膜铁磁共振线宽的贡献

利用角相关和温度相关的铁磁共振研究了Pt/CoFeTaB/Ir和Ir/CoFeTaB/Pt三层薄膜的磁性能。这可以定量确定对磁性行为的各种贡献，包括分离，有效吉尔伯特阻尼，非均匀阻尼和双磁振子散射对磁耗散的贡献。仅当首先沉积Ir层时，as -沉积膜表现出与Ir显著掺入CoFeTaB相一致的行为。首先沉积Pt时，在\(300\,^{\circ } \hbox {C}\)处对结构进行退火只会引起轻微的结构和磁性改变，而首先沉积Ir时，发现了更明显的变化，归因于Ir从CoFeTaB的热驱动向外扩散。从整体上考虑磁性薄膜器件的磁共振行为，可以提供有关磁性薄膜器件原子尺度结构的详细信息。

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来源期刊

Applied Magnetic Resonance 物理-光谱学

CiteScore

1.90

自引率

10.00%

发文量

审稿时长

2.3 months

期刊介绍： Applied Magnetic Resonance provides an international forum for the application of magnetic resonance in physics, chemistry, biology, medicine, geochemistry, ecology, engineering, and related fields. The contents include articles with a strong emphasis on new applications, and on new experimental methods. Additional features include book reviews and Letters to the Editor.