Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer
文献类型：期刊论文
| 作者 | Ye, Zhixing1,2; Zhao, Xiaotian1; Liu, Long1; Liu, Wei1; Wang, Jinghui1,2; Wu, Jinxiang1,2; Li, Yang1,2; Ma, Jun1,2; Ju, Hongzhan1,2; Zhang, Zhidong1 |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2023-10-31 |
| 页码 | 10 |
| ISSN号 | 2040-3364 |
| DOI | 10.1039/d3nr03677d |
| 通讯作者 | Zhao, Xiaotian(xtzhao@imr.ac.cn) ; Liu, Wei() |
| 英文摘要 | Generally, the addition of the Dy element leads to a decrease of the saturation magnetization and the remanent magnetization in NdFeB films due to its antiferromagnetic coupling with Fe. However, in this study, upon increasing the ratio of Dy in the Nd-Dy diffusion layers of NdFeB thick films, the saturation magnetization has an anomalously slight enhancement, while the coercivity and remanent magnetization have a large enhancement. The increase of coercivity is attributed to the decoupling between Nd2Fe14B grains and the enhanced pinning effect. Microstructural analysis revealed a layered structure composed of spherical Nd2Fe14B grains at the location of the Dy diffusion layer, which is attributed to the Dy diffusion layer reacting with the region of Nd element aggregation during the annealing process, facilitating transformation into Nd2Fe14B grains. The increase of the proportion of Nd2Fe14B grains results in a slight enhancement of saturation magnetization. By this method, we obtained a high-performance anisotropic NdFeB thick film of 28.7 mu m with a coercivity of 2.46 T and a surface field of 163 Oe. This work establishes a microscale growth model for NdFeB thick films and helps to prepare high-performance NdFeB thick films applicable directly to microelectromechanical systems. With increasing the ratio of Dy in the Nd-Dy diffusion layers of NdFeB thick films, the saturation magnetization has an anomalously slight enhancement, while the coercivity and remanent magnetization have a large enhancement. |
| 资助项目 | This work has been supported by the National Key Ramp;D Program of China (2021YFB3500303) and the National Natural Science Foundation of China under projects 52031014 and 51971219.[2021YFB3500303] ; National Key Ramp;D Program of China[52031014] ; National Key Ramp;D Program of China[51971219] ; National Natural Science Foundation of China |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001100685800001 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | This work has been supported by the National Key Ramp;D Program of China (2021YFB3500303) and the National Natural Science Foundation of China under projects 52031014 and 51971219. ; National Key Ramp;D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177456]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhao, Xiaotian; Liu, Wei |
| 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 | Ye, Zhixing,Zhao, Xiaotian,Liu, Long,et al. Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer[J]. NANOSCALE,2023:10. |
| APA | Ye, Zhixing.,Zhao, Xiaotian.,Liu, Long.,Liu, Wei.,Wang, Jinghui.,...&Zhang, Zhidong.(2023).Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer.NANOSCALE,10. |
| MLA | Ye, Zhixing,et al."Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer".NANOSCALE (2023):10. |
入库方式： OAI收割
来源：金属研究所
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