柔性PET基板上Ta/Pt/Co/Pt铁磁异质结构的温度辅助曲率自旋轨道转矩诱导磁化开关

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-04 DOI:10.1016/j.jmmm.2025.173025

Qi Guo, Xinyu Gao, Chaofan Li, Shuotong Zong, Jifan Hu, Zhicheng Wang, Yaxu Jin

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引用次数: 0

摘要

研究了在不同温度条件下柔性聚对苯二甲酸乙二醇酯（PET）衬底上制备的Ta/Pt/Co/Pt异质结构的弯曲自旋轨道转矩（SOT）诱导磁化开关。由于PET基板在350 K时具有较大的应变诱导磁各向异性和较低的垂直磁各向异性（PMA），弯曲PET基板产生的应变可以有效地控制sot诱导的磁化和PMA随曲率变化的切换。在交流脉冲作用下，曲率对不同温度下的异常霍尔电阻有规律地、稳定地调节。此外，磁光克尔效应（MOKE）测量清楚地表明，在不同温度下，畴壁运动是由曲率驱动的。该研究为制造可穿戴自旋电子设备提供了一种有效的方法，扩展了自旋电子技术的潜在应用。

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Temperature assisted curvature-manipulated spin-orbit torque induced switching of magnetization in Ta/Pt/Co/Pt ferromagnetic heterostructures fabricated on flexible PET substrates

We study the curvature-manipulated spin–orbit torque (SOT)-induced switching of magnetization of Ta/Pt/Co/Pt heterostructures fabricated on flexible polyethylene terephthalate (PET) substrates under different temperature conditions. Because of the huge strain induced magnetic anisotropy and inferior perpendicular magnetic anisotropy (PMA) at 350 K, the strain generated from bending PET substrate can control SOT-induced switching of magnetization and PMA efficiently with the varying curvature. Curvature modulates the anomalous Hall resistance regularly and stably at different temperatures under alternating current pulses. Moreover, the magnetic optical Kerr effect (MOKE) measurements clearly demonstrate domain wall motion is driven by curvature under different temperatures. This study provides an efficient approach to fabricate wearable spintronic equipment and extends the potential applications of spintronic technology.

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.