Prospects for the development of SmFe12-based permanent magnets with a ThMn12-type phase

P. Tozman, H. Sepehri-Amin, K. Hono

Research output: Contribution to journalArticlepeer-review

Abstract

The research interest in SmFe12-based permanent magnets has recently been revived in search for new permanent magnet materials that are not dependent on critical rare earth elements such as Nd and Dy. Although the superiority of the intrinsic hard magnetic properties of the Sm(Fe0.8Co0.2)12 compound as compared to those of Nd2Fe14B has been experimentally confirmed, its instability as a bulk phase and inability to achieve high coercivity hinder the realization of SmFe12-based high-performance permanent magnets. In this Viewpoint, by critically reviewing recent experimental and theoretical studies on SmFe12-based compounds, we discuss the prospects for the development of SmFe12-based high-performance permanent magnets that can outperform Nd-Fe-B-based magnets.

Original languageEnglish
Article number113686
JournalScripta Materialia
Volume194
DOIs
Publication statusPublished - 2021 Mar 15
Externally publishedYes

Keywords

  • Coercivity
  • Permanent magnet
  • ThMn-type structure, SmFe

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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