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arXiv 2203.05014cond-mat.mtrl-sciphysics.app-ph
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梯度成分薄膜中的交换自旋波

Exchange spin waves in thin films with gradient composition

I. A. Golovchanskiy, I. V. Yanilkin, A. I. Gumarov, B. F. Gabbasov, N. N. Abramov, R. V. Yusupov, R. I. Khaibullin, V. S. Stolyarov, L. R. Tagirov

摘要:

本文报道了成分基本不均匀的铁磁薄膜中的铁磁共振现象。Fe含量沿厚度呈线性分布的外延Pd-Fe薄膜被用作模型材料。反常的垂直自旋驻波的观察和量化使用集体动力学方程。数值分析得到了稀相Pd-Fe合金的交换刚度常数$D=2A/μ_0M_s=15$ ~T $\cdot$ nm $^2$和有效磁化强度与饱和磁化强度之比$M_{eff}/M_s=1.16$。它表明,总体而言,工程的薄膜的厚度与非均匀的组合物可以用于高频或低场磁振子操作使用交换自旋波。

英文摘要:

We report investigation of ferromagnetic resonance phenomenon in ferromagnetic thin films with essentially non-uniform composition. Epitaxial Pd-Fe thin film with linear distribution of Fe content across the thickness is used as the model material. Anomalous perpendicular standing spin waves are observed and quantified using the collective dynamic equation. Numerical analysis yields the exchange stiffness constant for diluted Pd-Fe alloy $D=2A/μ_0M_s=15$~T$\cdot$nm$^2$ and the ratio of the effective magnetization to the saturation magnetization $M_{eff}/M_s=1.16$. It is demonstrated that, overall, engineering of thin films with non-uniform composition across the thickness can be used for high-frequency or low-field magnonic operations using exchange spin waves.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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