Ho 薄膜中的热滞后--实验结果与建模

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

Journal of Magnetism and Magnetic Materials Pub Date : 2024-10-04 DOI:10.1016/j.jmmm.2024.172579

A.A. Gurgel , F.G. Queiroz , E.S.N. Silva , D.H.A.L. Anselmo , V.D. Mello , V.V. Proglyado , M.A. Milyaev , E.A. Kravtsov , D.I. Devyaterikov , E.A. Stepanova , V.D. Zhaketov , F.A. Shelkovyi , E.M. Smelova , K.M. Tsysar , R.R. Gimaev , V.I. Zverev

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引用次数: 0

摘要

本文介绍了厚度为 200 nm 的钬（Ho）薄膜在 100 Oe、1 kOe 和 10 kOe 的外加磁场下的热滞后理论建模和实验研究结果。在 100 Oe 和 1 kOe 下测量的等场磁化曲线在加热和冷却过程中没有表现出磁滞现象。相比之下，在 10 kOe 条件下测量的 M(T) 在加热和冷却过程中显示出显著差异。热滞后宽度几乎涵盖居里温度（TC）和奈尔温度（TN）之间的整个范围，并受外部磁场控制。此外，还讨论了与块状 Ho 样品相比，薄膜磁相图的特殊性。

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Thermal hysteresis in Ho thin films − experimental results and modeling

This paper presents the results of theoretical modeling and experimental studies of thermal hysteresis in holmium (Ho) thin films with a thickness of 200 nm at applied magnetic fields of 100 Oe, 1 kOe, and 10 kOe. The isofield magnetization curves, measured at 100 Oe and 1 kOe do not exhibit hysteresis during the heating and cooling processes. In contrast, M(T) measured at 10 kOe shows significant differences between the heating and cooling processes. The thermal hysteresis width covers almost the entire range between the Curie temperature (T_C) and Néel temperature (T_N) and is controlled by the external magnetic field. The peculiarities of the magnetic phase diagram of thin films in comparison with the bulk samples of Ho are also discussed.

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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.