Dramatic grain refinement and magnetic softening induced by Ni addition in Fe-B based nanocrystalline soft magnetic alloys

Z. Li, R. Parsons, B. Zang, H. Kishimoto, T. Shoji, A. Kato, J. Karel, K. Suzuki

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5 Citations (Scopus)

Abstract

The effects of Ni addition on the grain size (D) and coercivity (Hc) were investigated for nanocrystalline (Fe1-xNix)86B14 (x = 0–0.3) alloys prepared by ultra-rapid annealing of melt-spun amorphous precursors. Ni addition resulted in a structural change of the nanocrystallites from bcc to fcc and an exceptionally small D of 4.2 nm was obtained at x = 0.3. Hc was reduced dramatically from 6.8 A/m at x = 0 to as small as 2.6 A/m at x = 0.1. This significant improvement of magnetic softness is well understood by the effect of Ni on the local magnetocrystalline anisotropy.

Original languageEnglish
Pages (from-to)82-85
Number of pages4
JournalScripta Materialia
Volume181
DOIs
Publication statusPublished - May 2020

Keywords

  • Amorphous alloys
  • Coercivity
  • Grain size
  • Rapid annealing
  • Rapid solidification

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