Pulse current training induced marked improvement of soft magnetic properties in Fe-based amorphous alloys
| Autor: | Z.D. Zhang, S.M. Ye, R. Umetsu, Y.Q. Yan, Y. Zhang, X. Tong, Y.F. Cai, B. Zhang, J.F. Sun, Y.J. Huang, H.B. Ke, H.Y. Bai, W.H. Wang |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Materials Research Letters, Pp 1-7 (2024) |
| Druh dokumentu: | article |
| ISSN: | 21663831 2166-3831 |
| DOI: | 10.1080/21663831.2024.2429610 |
| Popis: | It is difficult to fine-tune the atomic local structure and magnetic domain structure globally to evade the saturation magnetization (Bs)- coercivity (Hc) trade-off in amorphous alloys with high-Fe content. Herein, a unique pulse current training is introduced to optimize the soft magnetic properties of Fe-based amorphous alloys, achieving 1.78 T Bs and 1.6 A/m Hc in Fe83.3Si4B8P4Cu0.7. Structural analysis shows that low coercivity is due to the almost no pinning-sites magnetic domain structures despite a relative large grain size of 25 nm. Training accumulates energy to activate soft regions and rearrange structure, eliminating quenching-induced stresses and inhomogeneities to minimize reversal pinning. |
| Databáze: | Directory of Open Access Journals |
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