Impact of RE-rich phases on magnetic properties in RE–Fe–B-sintered magnets by Tb diffusion
We investigated the effect of Tb grain boundary diffusion on the structural transformation and magnetic properties across operational temperature ranges. Through micro-structural characterization, Fm[Formula: see text]m-type and Ia[Formula: see text]-type RE-rich phases were observed, and their effe...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-08-01
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| Series: | Materials Research Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2025.2521050 |
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| author | Qiang Li Zhaohui Chen He Chong Hongyun Guo Zhifeng Huang Qing Zhou Weibin Cui |
| author_facet | Qiang Li Zhaohui Chen He Chong Hongyun Guo Zhifeng Huang Qing Zhou Weibin Cui |
| author_sort | Qiang Li |
| collection | DOAJ |
| description | We investigated the effect of Tb grain boundary diffusion on the structural transformation and magnetic properties across operational temperature ranges. Through micro-structural characterization, Fm[Formula: see text]m-type and Ia[Formula: see text]-type RE-rich phases were observed, and their effects on the magnetic properties were investigated. The distinct atomic distribution in the Ia[Formula: see text]-type phase characteristic [111] zone axis was observed via HAADF images in the diffused magnet. The Ia[Formula: see text]-type phase exhibited a lower lattice misfit with RE2Fe14B, favoring the formation of a larger nucleation field. The other grain boundaries with low coherence exhibit significant Cu enrichment. The lower lattice misfit and Cu-rich zone are critical for higher coercivity. |
| format | Article |
| id | doaj-art-3735dcefa8264f889df476ae417078d5 |
| institution | Kabale University |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj-art-3735dcefa8264f889df476ae417078d52025-08-20T03:41:52ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-08-0113882082810.1080/21663831.2025.2521050Impact of RE-rich phases on magnetic properties in RE–Fe–B-sintered magnets by Tb diffusionQiang Li0Zhaohui Chen1He Chong2Hongyun Guo3Zhifeng Huang4Qing Zhou5Weibin Cui6Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, People’s Republic of ChinaKey Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, People’s Republic of ChinaKey Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, People’s Republic of ChinaKey Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, People’s Republic of ChinaR&D Center, JL Mag Rare-Earth Co., Ltd, Baotou, People’s Republic of ChinaGuangdong Province Key Laboratory of Rare Earth Development and Application, Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou, People's Republic of ChinaKey Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, People’s Republic of ChinaWe investigated the effect of Tb grain boundary diffusion on the structural transformation and magnetic properties across operational temperature ranges. Through micro-structural characterization, Fm[Formula: see text]m-type and Ia[Formula: see text]-type RE-rich phases were observed, and their effects on the magnetic properties were investigated. The distinct atomic distribution in the Ia[Formula: see text]-type phase characteristic [111] zone axis was observed via HAADF images in the diffused magnet. The Ia[Formula: see text]-type phase exhibited a lower lattice misfit with RE2Fe14B, favoring the formation of a larger nucleation field. The other grain boundaries with low coherence exhibit significant Cu enrichment. The lower lattice misfit and Cu-rich zone are critical for higher coercivity.https://www.tandfonline.com/doi/10.1080/21663831.2025.2521050Nd-Fe-Bgrain boundary diffusionmagnetic propertiesIa space groupmicro-structure |
| spellingShingle | Qiang Li Zhaohui Chen He Chong Hongyun Guo Zhifeng Huang Qing Zhou Weibin Cui Impact of RE-rich phases on magnetic properties in RE–Fe–B-sintered magnets by Tb diffusion Materials Research Letters Nd-Fe-B grain boundary diffusion magnetic properties Ia space group micro-structure |
| title | Impact of RE-rich phases on magnetic properties in RE–Fe–B-sintered magnets by Tb diffusion |
| title_full | Impact of RE-rich phases on magnetic properties in RE–Fe–B-sintered magnets by Tb diffusion |
| title_fullStr | Impact of RE-rich phases on magnetic properties in RE–Fe–B-sintered magnets by Tb diffusion |
| title_full_unstemmed | Impact of RE-rich phases on magnetic properties in RE–Fe–B-sintered magnets by Tb diffusion |
| title_short | Impact of RE-rich phases on magnetic properties in RE–Fe–B-sintered magnets by Tb diffusion |
| title_sort | impact of re rich phases on magnetic properties in re fe b sintered magnets by tb diffusion |
| topic | Nd-Fe-B grain boundary diffusion magnetic properties Ia space group micro-structure |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2025.2521050 |
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