Structural origin of magnetic softening in a Fe-based amorphous alloy upon annealing

Xing Tong, Yan Zhang, Yaocen Wang, Xiaoyu Liang, Kai Zhang, Fan Zhang, Yuanfei Cai, Haibo Ke, Gang Wang, Jun Shen, Akihiro Makino, Weihua Wang

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The underlying structural origin of magnetic properties is still elusive in Fe-based amorphous alloys. In this study, distinctive soft magnetic properties were developed in Fe76Si9B10P5 amorphous ribbons through systematic design of annealing process. Combining with synchrotron radiation, high-resolution transmission electron microscopy and first principle ab initio molecular dynamic simulation, it is found that the atomic structural evolution both in short range order and medium range order is responsible for the magnetic softness at proper annealing temperature. In short range, formation of separated and densely coordinated Fe-metalloid clusters is instigated to adapt energy minimization, resulting in strengthening of ferromagnetic exchange interaction locally. In medium range, a homogeneous exchange-coupling from the uniformly strong and weak ferromagnetic regions is generated, which significantly weakens magnetic heterogeneity and leads to the excellent magnetic softness. Our findings may provide an effective/promising pathway to modulate the magnetic properties for Fe-based amorphous alloys, and give a comprehensive and quantitative understanding of the structure-properties relationship in amorphous materials.

本文言語English
ページ(範囲)233-240
ページ数8
ジャーナルJournal of Materials Science and Technology
96
DOI
出版ステータスPublished - 2022 1 10

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料力学
  • 機械工学
  • ポリマーおよびプラスチック
  • 金属および合金
  • 材料化学

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