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One-step synthesis of ThMn12-type Sm0.8Zr0.2Fe11SiBx (x =0-0.2) ribbon magnets via rapid solidification |
| Chi Zhang(张驰)1, Hui-Dong Qian(千辉东)2†, Wenyun Yang(杨文云)2, Jingzhi Han(韩景智)2, Xuegang Chen(陈学刚)1,3,‡, and Jinbo Yang(杨金波)2,4,5,6,§ |
1 Center of Free Electron Laser & High Magnetic Field, Leibniz International Joint Research Center of Materials Sciences of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China;
2 Institute of Condensed Matter and Material Physics, School of Physics, Peking University, Beijing 100871, China;
3 Information Materials and Intelligent Sensing Laboratory of Anhui Province, and Anhui Provincial Key Laboratory of Magnetic Functional Materials and Devices, Anhui University, Hefei 230601, China;
4 State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, China;
5 Beijing Key Laboratory for Magnetoelectric Materials and Devices, Beijing 100871, China 6 Peking University Yangtze Delta Institute of Optoelectronics, Beijing 100871, China |
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Abstract ThMn$_{12}$-type iron-rich rare-earth permanent magnetic materials have garnered significant attention due to their exceptional intrinsic magnetic properties. However, challenges such as the metastable nature of the ThMn$_{12}$-type phase, excessively small single-domain grain size, and complex fabrication processes have hindered the achievement of high phase purity, uniform microstructure, and desirable extrinsic performance. In this study, we directly synthesized ThMn$_{12}$-type Sm$_{0.8}$Zr$_{0.2}$Fe$_{11}$SiB$_{x}$ ($x = 0$-0.2) ribbon magnets via boron doping combined with a one-step rapid solidification method. This approach not only simplifies the fabrication process but also enhances phase stability and achieves a uniform microstructure with high ThMn$_{12}$-type phase purity. By optimizing the boron content and cooling rate, the resulting magnets exhibit a coercivity ($H_{\rm c}$) of 6222 Oe, a remanence ($M_{\rm r}$) of 80 emu/g, and a remanence ratio ($M_{\rm r}/M_{\rm s}$) of 0.71. This work demonstrates a streamlined approach to producing high-performance ThMn$_{12}$-type magnets and provides insights into their practical application potential.
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Received: 13 January 2025
Revised: 08 April 2025
Accepted manuscript online: 24 April 2025
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PACS:
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75.50.Ww
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(Permanent magnets)
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75.75.-c
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(Magnetic properties of nanostructures)
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75.75.Cd
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(Fabrication of magnetic nanostructures)
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| Fund: Project supported by the National Key R&D Program of China (Grant Nos. 2021YFB3500300 and 2023YFB3507000) and the Scientific Research Foundation of the High Education Institutions for Distinguished Young Scholars in Anhui Province (Grant No. 2022AH020012). This work was also partially supported by the Innovation Project for Overseas Researcher in Anhui Province (Grant No. 2022LCX004) and the facilities at the Center of Free Electron Laser&High Magnetic Field (FEL&HMF) in Anhui University. |
Corresponding Authors:
Hui-Dong Qian, Xuegang Chen, Jinbo Yang
E-mail: qianhuidong@pku.edu.cn;xgchen@ahu.edu.cn;jbyang@pku.edu.cn
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Cite this article:
Chi Zhang(张驰), Hui-Dong Qian(千辉东), Wenyun Yang(杨文云), Jingzhi Han(韩景智), Xuegang Chen(陈学刚), and Jinbo Yang(杨金波) One-step synthesis of ThMn12-type Sm0.8Zr0.2Fe11SiBx (x =0-0.2) ribbon magnets via rapid solidification 2025 Chin. Phys. B 34 077501
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