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Magnetic properties of Sm5Fe17 melt-spun ribbons and their borides

1 Department of Mechanical Science and Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, Chiba 275-0016, Japan;
2 Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan

Special Issues: Rare-earth-based materials

Sm5Fe17 melt-spun ribbons exhibited low coercivity and partly or mostly consisted of the amorphous phase. Annealing of Sm5Fe17 melt-spun ribbon resulted in the formation of the Sm5Fe17 phase. The annealed Sm5Fe17 melt-spun ribbon exhibited a high coercivity. It was found that the addition of B to the Sm5Fe17 alloy resulted in the promotion of the Sm2Fe14B phase. Annealed Sm5Fe17Bx (x = 0.5) melt-spun ribbons consisted of the Sm5Fe17 phase together with the Sm2Fe14B and SmFe2 phases. On the other hand, annealed Sm5Fe17Bx (x = 1.0-1.5) melt-spun ribbons consisted of the Sm2Fe14B and SmFe2 phases without the Sm5Fe17 phase. The resultant Sm5Fe17Bx (x = 1.0-1.5) melt-spun ribbons still showed a coercivity of around 2 kOe. The annealed Sm5Fe17 melt-spun ribbon exhibited a high coercivity over 25 kOe and a remanence of 40 emu/g, whereas the annealed Sm5Fe17B1.0 melt-spun ribbon exhibited a high remanence of 65 emu/g and a coercivity of 2.0 kOe.
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Keywords Sm-Fe alloys; rare-earth magnet; melt-spinning; coercivity; microstructures

Citation: Tetsuji Saito, Daisuke Nishio-Hamane. Magnetic properties of Sm5Fe17 melt-spun ribbons and their borides. AIMS Materials Science, 2015, 2(4): 392-400. doi: 10.3934/matersci.2015.4.392


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This article has been cited by

  • 1. Tetsuji Saito, Toru Horita, Sm5(Fe,Ti)17 melt-spun ribbons with high coercivity, AIP Advances, 2018, 8, 5, 056228, 10.1063/1.5006208

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