垂直磁化合成反铁磁体中的自旋波共振

Q3 Engineering

Journal of the Magnetics Society of Japan Pub Date : 2021-03-01 DOI:10.3379/MSJMAG.2103R004

M. Ishibashi, Y. Shiota, S. Funada, T. Moriyama, T. Ono

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引用次数: 1

摘要

我们报道了由Co/Ni多层和薄Ru间隔层组成的垂直磁化合成反铁磁自旋波共振。在面外偏置磁场的有限范围内观察到两种共振模式，其中Ru层分隔的两个磁矩是反铁磁排列的。这两种模式对偏置磁场表现出相反的依赖性，并对应于右极化和左极化自旋波。我们还从理论上推导了垂直磁化合成反铁磁体的自旋波色散。实验结果与理论分析吻合较好。

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Spin Wave Resonance in Perpendicularly Magnetized Synthetic Antiferromagnets

We report antiferromagnetic spin wave resonance in perpendicularly magnetized synthetic antiferromagnets consisting of Co/Ni multilayers and a thin Ru spacer layer. Two resonance modes were observed in the finite range of the out-of-plane bias magnetic field, where two magnetic moments separated by the Ru layer were antiferromagnetically aligned. These two modes show an opposite dependence on the bias magnetic field and correspond to right- and left-handed polarized spin waves. We also theoretically derive the spin wave dispersion for the perpendicularly magnetized synthetic antiferromagnets on the basis of an equation of motion. Our experimental results show good agreement with the theoretical analysis.

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来源期刊

Journal of the Magnetics Society of Japan Engineering-Electrical and Electronic Engineering

CiteScore

2.00

自引率

0.00%

发文量