Magnetic textures and perpendicular anisotropy in asymmetric multilayers with Ta and W

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-11-25 DOI:10.1063/5.0239692

S. Al Shukaili, I. Berrai, F. Al Ma'Mari, M. Ramu, S. Bhatti, M. T. Zar Myint, S. Al Harthi, S. M. Cherif, S. N. Piramanayagam, R. Sbiaa

引用次数: 0

Abstract

Asymmetric (Pt/Co/X) multilayers where X is Ta or W have been investigated. Both structures showed a tailed hysteresis loop indicating the existence of skyrmions. The interfacial Dzyaloshinskii–Moriya interaction (iDMI) extracted from Brillouin light scattering revealed that sample with W has a value of −0.52 mJ/m2, which is ∼2.5 times larger than Ta case. In addition to iDMI, the perpendicular magnetic anisotropy is also stronger for W case due to the orbital hybridization at the interface. From magnetic force microscopy, W sample showed a change from unusual rod-like domains to skyrmions, while the change was from labyrinth domains to skyrmions in Ta-based structure.

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含 Ta 和 W 的不对称多层膜中的磁纹理和垂直各向异性

研究了 X 为 Ta 或 W 的不对称（Pt/Co/X）多层膜。这两种结构都出现了尾状滞后环，表明存在天离子。从布里渊光散射中提取的界面 Dzyaloshinskii-Moriya 相互作用（iDMI）显示，W 样品的值为 -0.52 mJ/m2，是 Ta 样品的 2.5 倍。除了 iDMI 外，由于界面上的轨道杂化，W 样品的垂直磁各向异性也更强。从磁力显微镜观察，W 样品显示了从不规则的棒状结构域到天线状结构域的变化，而 Ta 基结构则是从迷宫状结构域到天线状结构域的变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

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