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Investigation of magnetic domain evolutions and microstructural changes in Pr-Dy-Cu modified Nd-Fe-B magnets |
| Peng Shen(沈鹏)1, Hui-Dong Qian(千辉东);1,†, Jingzhi Han(韩景智);1,‡, Tao Liu(刘涛)2, Zhen Yan(闫震)3, Ming Ji(姬明)4, Lei Zhou(周磊)2, Weiqiang Liu(刘卫强)4, Shunquan Liu(刘顺荃)1, Wenyun Yang(杨文云)1, Yan Li(李岩)5, Huihui Cao(曹慧慧)3, Ming Yue(岳明)4, Jinbo Yang(杨金波);1,2, and Yingchang Yang(杨应昌)1 |
1 Institute of Condensed Matter and Material Physics, School of Physics, Peking University, Beijing 100871, China;
2 Advanced Technology & Materials Co., Ltd., Beijing 100081, China;
3 Rare Earth Advanced Materials Technology Innovation Center, Inner Mongolia Northern Rare Earth Advanced Materials Technology Innovation Co., Ltd., Baotou 014030, China;
4 Faculty of Materials and Manufacturing, Key Laboratory of Advanced Functional Materials, Ministry of Education of China, Beijing University of Technology, Beijing 100124, China;
5 Inner Mongolia University of Science & Technology, Baotou 014010, China |
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Abstract The enhancement of coercivity in Nd-Fe-B sintered magnets modified by Pr$_{58}$Dy$_{10}$Cu$_{32}$ alloy was investigated through scanning electron microscope (SEM) and in-situ magneto-optic Kerr effect (MOKE) microscopy. The modification treatment resulted in the formation of a smooth and continuous weakly magnetic grain boundary layer and the (Nd,Pr,Dy)$_{2}$Fe$_{14}$B main phase with a high magnetocrystalline anisotropy field, leading to an increased coercivity of 23 kOe. MOKE observations revealed that the dynamic evolution of the maze domain area under an external magnetic field varied significantly between the original and modified magnets. Compared with the original magnets, the modified magnets exhibited a slower decrease in maze domain area during magnetization and a slower increase during reverse magnetization, contributing to the observed coercivity enhancement.
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Received: 19 March 2025
Revised: 06 May 2025
Accepted manuscript online: 19 May 2025
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PACS:
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75.50.-y
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(Studies of specific magnetic materials)
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77.80.Dj
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(Domain structure; hysteresis)
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81.05.-t
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(Specific materials: fabrication, treatment, testing, and analysis)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant Nos. 2021YFB3500300, 2023YFB3507000, and 2023XYJG0001-01-03), the National Natural Science Foundation of China (Grant No. 52171167), and Inner Mongolia Northern Rare Earth Advanced Materials Technology Innovation Co., Ltd. Project (Grant No. CXZXB-202304-0004). |
Corresponding Authors:
Hui-Dong Qian, Jingzhi Han
E-mail: qianhuidong@pku.edu.cn;hanjingzhi@pku.edu.cn
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Cite this article:
Peng Shen(沈鹏), Hui-Dong Qian(千辉东);, Jingzhi Han(韩景智);, Tao Liu(刘涛), Zhen Yan(闫震), Ming Ji(姬明), Lei Zhou(周磊), Weiqiang Liu(刘卫强), Shunquan Liu(刘顺荃), Wenyun Yang(杨文云), Yan Li(李岩), Huihui Cao(曹慧慧), Ming Yue(岳明), Jinbo Yang(杨金波);, and Yingchang Yang(杨应昌) Investigation of magnetic domain evolutions and microstructural changes in Pr-Dy-Cu modified Nd-Fe-B magnets 2025 Chin. Phys. B 34 087503
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[1] Hirosawa S, Matsuura Y, Yamamoto H, Fujimura S, Sagawa M and Yamauchi H 1986 J. Appl. Phys. 59 873
[2] Boltich E, Oswald E, Huang M, Hirosawa S, Wallace W and Burzo E 1985 J. Appl. Phys. 57 4106
[3] Sagawa M, Fujimura S, Togawa N, Yamamoto H and Matsuura Y 1984 J. Appl. Phys. 55 2083
[4] Vial J F, Nevalainen E, Sagawa M, Hiraga K and Park K 2002 J. Magn. Magn. Mater. 242 1329
[5] Ramesh R, Thomas G and Ma B M 1988 J. Appl. Phys. 64 6416
[6] Ramesh R and Srikrishna K 1988 J. Appl. Phys. 64 6406
[7] Sepehri-Amin H, Une Y, Ohkubo T, Hono K and Sagawa M 2011 Scr. Mater. 65 396
[8] Sepehri-Amin H, Ohkubo T, Shima T and Hono K 2012 Acta Mater. 60 819
[9] Wan F M, Zhang Y F, Han J Z, Liu S Q, Liu T, Zhou L, Fu J B, Zhou D, Zhang X D, Yang J B, Yang Y C, Chen J and Deng Z W 2014 J. Appl. Phys. 115 203910
[10] Chen G X, Bao X Q, Lu K C, Lv X K, Ding Y, Zhang M, Wang C G and Gao X X 2019 J. Magn. Magn. Mater. 477 17
[11] Zhang Y J, Ma T Y, Liu X L, Liu P, Jin J Y, Zou J D and Yan M 2016 J. Magn. Magn. Mater. 399 159
[12] Bu M F, Ren S Q, Xin B and Yan M 2023 Intermetallics 157 107891
[13] Bao X Q, Wang Z H, Zhang S J, Li J H and Gao X X 2024 J. Magn. Magn. Mater. 591 171725
[14] Wang X, Zhu M G, Xia F, Zhang M L, Liu F, Guo Y J, Zhang L L, Zhang G R and Li W 2021 J. Rare Earth. 39 979
[15] Tang W, Wang J, Pan C C, Kang M C, Zhou L, Kramer M J, Cui J, and Anderson I E 2024 IEEE Trans. Magn. 60 2100505
[16] Yu Z G, Chen S Y, Zeng C C, Yu H Y, Wu Y X, He J Y and Liu Z W 2024 J. Mater. Chem. C 12 15239
[17] Yu Z G, Liu X Y, He J Y, Cao J L, Fan W B, Wu Y X, Yu H Y, Liu Z W, Wang Z and Niu E 2023 J. Mater. Chem. C 11 645
[18] Wong Y J, Chang H W, Lee Y, Chang W C, Chiu C H and Mo C C 2022 IEEE Trans. Magn. 58 2102305
[19] Lv M, Kong T, Zhang W H, Zhu M Y, Jin H M, Li W X and Li Y 2021 J. Magn. Magn. Mater. 517 167278
[20] Hirosawa S 2019 IEEE Trans. Magn. 55 2100506
[21] Kobayashi K, Urushibata K, Matsushita T, Sakamoto S and Suzuki S 2014 J. Alloys Compd. 615 569
[22] Ji M, Wang Z J, Liu W Q, Li Y Q, Chen H, Wu H H, Du R H, Zhang D T, Yue M, Yi X F, Liu Y H and Zha S S 2024 J. Alloys Compd. 970 172598 |
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