中国物理B ›› 2025, Vol. 34 ›› Issue (7): 77501-077501.doi: 10.1088/1674-1056/add006
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
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
摘要： 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.
中图分类号: (Permanent magnets)
- 75.50.Ww