应变工程控制铥铁石榴石薄膜的垂直磁各向异性和阻尼

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

Journal of Magnetism and Magnetic Materials Pub Date : 2025-09-17 DOI:10.1016/j.jmmm.2025.173513

Zimu Li , Tengfei Zhang , Quwen Wang , Qian Zhao , Feng Li , Yixin Fan , Chenbo Zhao , Jianbo Wang , Qingfang Liu , Guoqiang Yu , Jinwu Wei

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引用次数: 0

摘要

控制稀土铁石榴石薄膜的磁性能对于自旋电子学和磁学器件的应用具有重要意义。本文在（111）取向石榴石衬底上溅射制备了外延铥铁石榴石（TmIG）薄膜。TmIG薄膜与衬底之间的晶格失配会诱发平面内的拉伸应变，拉伸应变的大小可以通过薄膜厚度来调节。TmIG薄膜的静态磁性能表现出明显的垂直磁各向异性。采用铁磁共振法对TmIG薄膜的高频磁性能进行了表征。结果表明，一阶和二阶磁各向异性、回旋磁比和吉尔伯特阻尼参数与拉伸应变密切相关。50nm TmIG薄膜的吉尔伯特阻尼约为8.8 × 10−3。此外，我们还研究了TmIG薄膜在低温下的高频磁性能。这项工作为应变工程设计提供了有价值的见解，并证明了TmIG薄膜在自旋电子和磁子器件中的应用潜力。

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Controlling perpendicular magnetic anisotropy and damping in thulium iron garnet films by strain engineering

Controlling the magnetic properties of rare-earth iron garnet films is important for applications in spintronics and magnonics devices. Here, we prepared the epitaxial thulium iron garnet (TmIG) thin films by sputtering on (111)-oriented garnet substrates. An in-plane tensile strain is induced by the lattice mismatch between TmIG and substrate, and the magnitudes of tensile strain in TmIG films can be tuned through the film thickness. Static magnetic properties show a significant perpendicular magnetic anisotropy of TmIG films. Ferromagnetic resonance measurement was employed to characterize the high-frequency magnetic properties of TmIG films. The results show that the first- and second-order magnetic anisotropy, gyromagnetic ratio and Gilbert damping parameter strongly depend on the tensile strain. The Gilbert damping is about 8.8 × 10⁻³ for the 50-nm TmIG film. In addition, we also studied the high-frequency magnetic properties at low temperatures of the TmIG films. This work offers a valuable insight for the strain engineering design and demonstrates the potential of TmIG thin films as a promising candidate for applications in spintronic and magnonic devices.

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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.