Coercivity mechanism and magnetization reversal of anisotropic La-Nd-Dy-Fe-B micron-sized films
文献类型：期刊论文
| 作者 | Ma, J.1,2; Zhao, X. T.1; Liu, W.1; Liu, L.1; Zhao, X. G.1; Zhang, Z. D.1 |
| 刊名 | PHYSICA B-CONDENSED MATTER
 |
| 出版日期 | 2025 |
| 卷号 | 696页码:9 |
| 关键词 | La-Nd-Dy-Fe-B micron-sized film Magnetization reversal Coercivity mechanism Magnetic domain |
| ISSN号 | 0921-4526 |
| DOI | 10.1016/j.physb.2024.416636 |
| 通讯作者 | Zhao, X. T.(xtzhao@imr.ac.cn) ; Liu, W.(wliu@imr.ac.cn) |
| 英文摘要 | The coercivity mechanism and magnetization reversal process of anisotropic La-Nd-Dy-Fe-B micron-sized films have been investigated. By varying the thickness of the single-layer film from 500 nm to 6 mu m, the highest coercivity of 1.88 T in the film with 3 mu m thickness is achieved at 300 K, due to the large dipole interaction and domain pinning effect. When the thickness is further increased to 6 mu m, the coercivity decreases sharply to 1.11 T due to the microstructure and phase formation in the film. In the 6 mu m multilayer film, the addition of a Ta spacer layer further enhances perpendicular magnetic anisotropy, the dipole interaction, and adjusts the phase distribution, collectively boosting the coercivity of the micron-sized film (1.63 T). As thickness of the film increases, the dominant mechanism of coercivity shifts from a pinning mechanism to a nucleation mechanism. This study contributes to the understanding of the coercivity mechanism and magnetization reversal process in La-Nd-DyFe-B permanent magnet micron-sized films. |
| 资助项目 | National Key R & D Program of China[2023YFB3507301] ; National Key R & D Program of China[2021YFB3500303] ; National Nature Science Foundation of China[52031014] ; National Nature Science Foundation of China[51971219] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001341118000001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R & D Program of China ; National Nature Science Foundation of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhao, X. T.; Liu, W. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, J.,Zhao, X. T.,Liu, W.,et al. Coercivity mechanism and magnetization reversal of anisotropic La-Nd-Dy-Fe-B micron-sized films[J]. PHYSICA B-CONDENSED MATTER,2025,696:9. |
| APA | Ma, J.,Zhao, X. T.,Liu, W.,Liu, L.,Zhao, X. G.,&Zhang, Z. D..(2025).Coercivity mechanism and magnetization reversal of anisotropic La-Nd-Dy-Fe-B micron-sized films.PHYSICA B-CONDENSED MATTER,696,9. |
| MLA | Ma, J.,et al."Coercivity mechanism and magnetization reversal of anisotropic La-Nd-Dy-Fe-B micron-sized films".PHYSICA B-CONDENSED MATTER 696(2025):9. |
入库方式： OAI收割
来源：金属研究所
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