Enhanced coercivity of spark plasma sintered Zn-bonded Sm-Fe-N magnets

D. Prabhu, H. Sepehri-Amin, C. L. Mendis, T. Ohkubo, K. Hono, S. Sugimoto

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

A high-coercivity Zn-bonded Sm-Fe-N magnet is synthesized using spark plasma sintering. Optimal post-sinter annealing results in a large coercivity of μ 0H c = 2.75 T. Transmission electron microscopy and atom probe tomography revealed the formation of a Sm-Fe-Zn-N phase on the particle surface and the presence of Fe 3Zn 10 at the grain boundaries, which are believed to be the cause of the enhanced coercivity.

Original languageEnglish
Pages (from-to)153-156
Number of pages4
JournalScripta Materialia
Volume67
Issue number2
DOIs
Publication statusPublished - 2012 Jul

Keywords

  • Atom probe tomography
  • Coercivity
  • Permanent magnet
  • Sm-Fe-N

ASJC Scopus subject areas

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

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