Micromagnetic simulation of Nd–Fe–B grain with a dysprosium-containing shell
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....
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2025-02-01
|
| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0216806 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850027070506139648 |
|---|---|
| author | Kai Li Yingying Dai Zhiming Dai Zhenhua Wang Da Li Wei Liu Zhidong Zhang |
| author_facet | Kai Li Yingying Dai Zhiming Dai Zhenhua Wang Da Li Wei Liu Zhidong Zhang |
| author_sort | Kai Li |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-ebcdb1d7e30c486d995f8b3332698dd3 |
| institution | DOAJ |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-ebcdb1d7e30c486d995f8b3332698dd32025-08-20T03:00:21ZengAIP Publishing LLCAIP Advances2158-32262025-02-01152025002025002-710.1063/5.0216806Micromagnetic simulation of Nd–Fe–B grain with a dysprosium-containing shellKai Li0Yingying Dai1Zhiming Dai2Zhenhua Wang3Da Li4Wei Liu5Zhidong Zhang6Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaThe 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.http://dx.doi.org/10.1063/5.0216806 |
| spellingShingle | Kai Li Yingying Dai Zhiming Dai Zhenhua Wang Da Li Wei Liu Zhidong Zhang Micromagnetic simulation of Nd–Fe–B grain with a dysprosium-containing shell AIP Advances |
| title | Micromagnetic simulation of Nd–Fe–B grain with a dysprosium-containing shell |
| title_full | Micromagnetic simulation of Nd–Fe–B grain with a dysprosium-containing shell |
| title_fullStr | Micromagnetic simulation of Nd–Fe–B grain with a dysprosium-containing shell |
| title_full_unstemmed | Micromagnetic simulation of Nd–Fe–B grain with a dysprosium-containing shell |
| title_short | Micromagnetic simulation of Nd–Fe–B grain with a dysprosium-containing shell |
| title_sort | micromagnetic simulation of nd fe b grain with a dysprosium containing shell |
| url | http://dx.doi.org/10.1063/5.0216806 |
| work_keys_str_mv | AT kaili micromagneticsimulationofndfebgrainwithadysprosiumcontainingshell AT yingyingdai micromagneticsimulationofndfebgrainwithadysprosiumcontainingshell AT zhimingdai micromagneticsimulationofndfebgrainwithadysprosiumcontainingshell AT zhenhuawang micromagneticsimulationofndfebgrainwithadysprosiumcontainingshell AT dali micromagneticsimulationofndfebgrainwithadysprosiumcontainingshell AT weiliu micromagneticsimulationofndfebgrainwithadysprosiumcontainingshell AT zhidongzhang micromagneticsimulationofndfebgrainwithadysprosiumcontainingshell |