| Micromagnetic simulation of Nd-Fe-B grain with a dysprosium-containing shell | |
| Li, Kai1,2; Dai, Yingying1; Dai, Zhiming1,3,4; Wang, Zhenhua1; Li, Da1; Liu, Wei1; Zhang, Zhidong1 | |
| 通讯作者 | Dai, Yingying(yydai11b@imr.ac.cn) ; Wang, Zhenhua(zhwang@imr.ac.cn) |
| 2025-02-01 | |
| 发表期刊 | AIP ADVANCES
 |
| 卷号 | 15期号:2页码:7 |
| 摘要 | The effects of Dy-doped shell thickness on the magnetic properties and magnetization reversal behavior of a Nd-Fe-B grain have been systematically investigated using micromagnetic simulations based on a core-shell model. The Dy-containing shell can significantly enhance the coercivity of the model. Notably, when the shell thickness reaches 12 nm, the coercivity reaches its maximum value, and the nucleation sites shift from the core-shell interface to the grain corners. Ferromagnetic resonance spectra indicate that the low-frequency modes are associated with the nucleation sites, and the increased coercivity is related to the shift of the core-shell simultaneous resonance mode to higher frequency. In addition, we propose a multi-shell model to further enhance the coercivity by shifting the nucleation points. This approach of adjusting the nucleation sites can also be applied to improve the magnetic properties of other magnets. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND) license (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 资助者 | National Key R&D Program of China ; National Nature Science Foundation of China |
| DOI | 10.1063/5.0216806 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Key R&D Program of China[2021YFB3500100] ; National Key R&D Program of China[2023YFB3507601] ; National Nature Science Foundation of China[52031014] ; National Nature Science Foundation of China[51771198] ; National Nature Science Foundation of China[52201216] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| WOS记录号 | WOS:001416717400008 |
| 出版者 | AIP Publishing |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/179886 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Dai, Yingying; Wang, Zhenhua |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China 3.Huaiyin Normal Univ, Dept Phys, Huaian 223300, Peoples R China 4.Huaiyin Normal Univ, Jiangsu Key Lab Modern Measurement Technol & Intel, Huaian 223300, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Kai,Dai, Yingying,Dai, Zhiming,et al. Micromagnetic simulation of Nd-Fe-B grain with a dysprosium-containing shell[J]. AIP ADVANCES,2025,15(2):7. |
| APA | Li, Kai.,Dai, Yingying.,Dai, Zhiming.,Wang, Zhenhua.,Li, Da.,...&Zhang, Zhidong.(2025).Micromagnetic simulation of Nd-Fe-B grain with a dysprosium-containing shell.AIP ADVANCES,15(2),7. |
| MLA | Li, Kai,et al."Micromagnetic simulation of Nd-Fe-B grain with a dysprosium-containing shell".AIP ADVANCES 15.2(2025):7. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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