Role of V on the coercivity of SmFe12-based melt-spun ribbons revealed by machine learning and microstructure characterizations

Xin Tang, J. Li, A. K. Srinithi, H. Sepehri-Amin, T. Ohkubo, K. Hono

研究成果: Article査読

12 被引用数 (Scopus)

抄録

We employed machine-learning of a dataset extracted from literature on Sm(Fe,X)12-based alloys to understand the most influential parameters for coercivity. V-addition is found to be most influential to coercivity. The microstructure origin for coercivity in SmxFe11Ti and SmxFe10TiV (1.0≤x ≤ 2.1) melt-spun ribbons was investigated experimentally. Unlike V-free alloys, ThMn12-type structure can be stabilized in a wide range of x =1.03-1.62 in SmxFe10TiV ribbons. Coercivity increases from 0.51 T for Sm0.99Fe11Ti to 1.1 T for Sm1.06Fe10TiV optimally-annealed ribbons. The enhanced coercivity originates from formation of a Sm-enriched intergranular phase enveloping the SmFe12-based grains, increasing pinning force against the magnetic domain-wall propagation.

本文言語English
論文番号113925
ジャーナルScripta Materialia
200
DOI
出版ステータスPublished - 2021 7月 15
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 金属および合金

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