Development of Co-lean (Sm,Y)(Fe,Co,Ti)12compounds with large saturation magnetization

Pelin Tozman, Hossein Sepehri-Amin, Xin Tang, Tadakatsu Ohkubo, Kazuhiro Hono

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Large saturation magnetization in the SmFe12-based compounds is realized by substitution of scarce Co for Fe site. However, reduction of Co is necessary for their potential practical applications. In this work, we successfully decrease the concentration of Co, from 17.3 at% to 8.7 at% while maintaining large μ 0 M s of 1.41 T at 300 K in Ti reduced Sm0.8Y0.2(Fe0.9Co0.1)11.25Ti0.75 compound. In addition, we report the highest μ 0 M s for bulk Sm0.8Y0.2(Fe0.8Co0.2)11.25Ti0.75 with μ 0 M s = 1.49 T, μ 0 H a = 9.14 T at 300 K and T c = 831 K. We demonstrate (Sm0.8Y0.2)Fe12-based compounds exhibit superior intrinsic magnetic properties than Nd2Fe14B above 473 K.

Original languageEnglish
Article number045505
JournalApplied Physics Express
Issue number4
Publication statusPublished - 2022 Apr
Externally publishedYes


  • SmFe-based bulk compound
  • bulk
  • cobalt reduction
  • intrinsic magnetic properties
  • magnetization

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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