Annealing effect on the magnetic properties of cobalt-based amorphous alloys

Sumin Kim, Yong Jin Kim, Young-geun Kim, Haein Choi-Yim

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2 Citations (Scopus)

Abstract

The annealing effects on the magnetic properties of the Co72B19.2Si4.8Cr4 and Co64.8Fe7.2B19.2Si4.8Cr4 alloy systems are reported. Ribbon samples with 2 mm width and 20–30 μm thickness for both compositions were synthesized by melt spinning. The as-spun samples were subjected to annealing at various temperatures below their glass transition temperatures for 15 min in a vacuum. The annealed systems tended to have improved soft magnetic characteristics, including higher saturation magnetization and lower coercivity values, while maintaining their amorphous phase. A high saturation magnetization of 87.8 emu g−1 and low coercivity of 0.084 Oe were obtained for Co64.8Fe7.2B19.2Si4.8Cr4 after annealing at 400 °C, which is a significant improvement in comparison to the magnetic properties of the as-spun ribbons.

Original languageEnglish
Pages (from-to)548-551
Number of pages4
JournalCurrent Applied Physics
Volume17
Issue number4
DOIs
Publication statusPublished - 2017 Apr 1

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Keywords

  • Amorphous
  • Annealing
  • Co-based
  • Ferromagnetic
  • Soft magnetic

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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