A novel strategy for the fabrication of high-performance nanostructured Ce-Fe-B magnetic materials via electron-beam exposure
文献类型：期刊论文
| 作者 | Zha, Liang; Kim, Cholsong; Yun, Chao; Zhou, Dong; Li, Wei; Kong, Xiangdong; Han, Li; Yang, Wenyun; Liu, Shunquan; Han, Jingzhi |
| 刊名 | SCIENCE CHINA-MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 64期号:10页码:2519-2529 |
| 关键词 | GRAIN-BOUNDARY DIFFUSION RARE-EARTH-ELEMENTS HIGH-COERCIVITY REVERSAL CRYSTALLIZATION MICROSTRUCTURE BEHAVIOR |
| 英文摘要 | Ce2Fe14B compound has a great potential to serve as a novel permanent magnet alternative thanks to the abundant and inexpensive rare-earth element (cerium), while its low magnetocrystalline anisotropy and energy product severely restrict its applications. In this work, a novel strategy combining melt-spinning and electron-beam exposure (EBE) aiming for fabricating high-performance Ce-Fe-B magnetic materials is reported to solve the above-mentioned problem. Remarkably, this strategy facilitates developing a suitable grain boundary configuration without using any additional heavy rare-earth element. Under the optimal EBE condition, the maximum energy product ((BH)(max)) of pure Ce-Fe-B alloy is 6.5 MGOe, about four times higher than that obtained after conventional rapid thermal processing method for the same precursor. The enhanced intergranular magnetostatic coupling effect in the EBE sample is validated by mapping the first-order-reversal-curve (FORC) diagrams. The in-situ observation of magnetic domain wall motion for Ce-Fe-B alloy using Lorentz transmission electron microscopy reveals that the boundary layers are very effective in pinning the motion of domain walls, leading to the increased coercivity under EBE, and this pinning effect is further verified by micromagnetic simulations. Our results suggest that CeFeB materials using EBE could be a promising candidate after further processing, which could fill the performance gap between hexaferrite and Nd-Fe-B-based magnets. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21898]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Xia, WX (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China. 2.Yang, JB (corresponding author), Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China. 3.Yang, JB (corresponding author), Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China. 4.Yang, JB (corresponding author), Beijing Key Lab Magnetoelect Mat & Devices, Beijing 100871, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zha, Liang,Kim, Cholsong,Yun, Chao,et al. A novel strategy for the fabrication of high-performance nanostructured Ce-Fe-B magnetic materials via electron-beam exposure[J]. SCIENCE CHINA-MATERIALS,2021,64(10):2519-2529. |
| APA | Zha, Liang.,Kim, Cholsong.,Yun, Chao.,Zhou, Dong.,Li, Wei.,...&Yang, Jinbo.(2021).A novel strategy for the fabrication of high-performance nanostructured Ce-Fe-B magnetic materials via electron-beam exposure.SCIENCE CHINA-MATERIALS,64(10),2519-2529. |
| MLA | Zha, Liang,et al."A novel strategy for the fabrication of high-performance nanostructured Ce-Fe-B magnetic materials via electron-beam exposure".SCIENCE CHINA-MATERIALS 64.10(2021):2519-2529. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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