| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Improvement of the microstructure and magnetic properties of (La,Ce)-Fe-B nanocrystalline ribbons |
| Li-Yu Lian(连李昱)1, Xiao-Wei Zhang(张晓伟)1, Ying Liu(刘颖)1,2, Jun Li(李军)1,†, and Ren-Quan Wang(王仁全)1 |
1 School of Materials Science and Engineering, Sichuan University, Chengdu 610065, China;
2 Key Laboratory of Advanced Special Material&Technology, Ministry of Education, Sichuan University, Chengdu 610065, China |
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Abstract The obstacles of inferior microstructure and poor magnetic properties of (La,Ce)-Fe-B type magnets stand in the way of expanding their applications. In this work, (La,Ce)-Fe-B melt-spun ribbons were prepared with different La/Ce ratios and rare earth contents. The microstructure and magnetic properties of these ribbons were investigated. With the La/Ce ratio increased, the fraction of the CeFe2 phase decreased and the β -La phase segregated among matrix grains, which deteriorated the coercivity of the ribbons. Reducing the rare earth content effectively suppressed the β -La phase and improved the proportion of the matrix phase in the ribbons. Here, the optimal alloy composite (La15Ce85)14Fe80B6 has been obtained with modified microstructure and inhibited secondary phases. Good ribbon performance was tested, with Hcj =4.51 kOe, Br =6.29 kG and (BH)max = 6.81 MGOe.
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Received: 28 March 2023
Revised: 10 May 2023
Accepted manuscript online: 25 May 2023
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PACS:
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75.50.Ww
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(Permanent magnets)
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75.47.Lx
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(Magnetic oxides)
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75.75.-c
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(Magnetic properties of nanostructures)
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| Fund: Project supported by the fifth batch of major scientific and technological research projects in the Panxi Experimental Zone of Sichuan Province, the new functional materials and applications of rare earth vanadium titanium (Grant No. 2020SCUNG201). |
Corresponding Authors:
Jun Li
E-mail: li_jun@scu.edu.cn
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Cite this article:
Li-Yu Lian(连李昱), Xiao-Wei Zhang(张晓伟), Ying Liu(刘颖), Jun Li(李军), and Ren-Quan Wang(王仁全) Improvement of the microstructure and magnetic properties of (La,Ce)-Fe-B nanocrystalline ribbons 2023 Chin. Phys. B 32 077501
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