中国物理B ›› 2025, Vol. 34 ›› Issue (7): 76402-076402.doi: 10.1088/1674-1056/adcb25

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Molecular-dynamics simulations on the crystallization of Fe metallic glasses under alternating magnetic field

Yanxue Wu(吴言雪)1, Qiang-Qiang Pan(潘强强)1, Rui Ning(宁睿)1, and Hailong Peng(彭海龙)1,2,†   

  1. 1 School of Materials Science and Engineering, Central South University, Changsha 410083, China;
    2 State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
  • 收稿日期:2025-03-12 修回日期:2025-04-08 接受日期:2025-04-10 出版日期:2025-06-18 发布日期:2025-07-15
  • 通讯作者: Hailong Peng E-mail:hailong.peng@csu.edu.cn
  • 基金资助:
    Project supported by the Scientific Research Foundation of the Education Department of Hunan Province, China (Grant No. 24A0007), the National Natural Science Foundation of China (Grant No. 52371168), and the Foundation of Science and Technology on Surface Physics and Chemistry Laboratory (Grant No. JCKYS2024120202).

Molecular-dynamics simulations on the crystallization of Fe metallic glasses under alternating magnetic field

Yanxue Wu(吴言雪)1, Qiang-Qiang Pan(潘强强)1, Rui Ning(宁睿)1, and Hailong Peng(彭海龙)1,2,†   

  1. 1 School of Materials Science and Engineering, Central South University, Changsha 410083, China;
    2 State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
  • Received:2025-03-12 Revised:2025-04-08 Accepted:2025-04-10 Online:2025-06-18 Published:2025-07-15
  • Contact: Hailong Peng E-mail:hailong.peng@csu.edu.cn
  • Supported by:
    Project supported by the Scientific Research Foundation of the Education Department of Hunan Province, China (Grant No. 24A0007), the National Natural Science Foundation of China (Grant No. 52371168), and the Foundation of Science and Technology on Surface Physics and Chemistry Laboratory (Grant No. JCKYS2024120202).

摘要: We performed the coupled molecular-dynamics and spin dynamics simulations to investigate the magnetic annealing effect on the crystallization behavior of Fe metallic glasses (MGs). By calculating the local five-fold symmetry, Voronoi polyhedron, and bond orientational order parameters, we find a significant structural evolution at high-frequency magnetic annealing: the icosahedral order diminishes, and the crystalline-like order is enhanced, comparing to the case without magnetic field. The fraction of the body-centered cubic structures remarkably increases with the frequency of magnetic annealing, and the atoms of these order show a tendency of aggregating in space to form the crystalline nuclei. These findings unveil how the local structure evolves under magnetic annealing, and the accelerated crystallization process of MGs through alternating magnetic fields.

关键词: metallic glasses, magnetic annealing, crystallization behavior

Abstract: We performed the coupled molecular-dynamics and spin dynamics simulations to investigate the magnetic annealing effect on the crystallization behavior of Fe metallic glasses (MGs). By calculating the local five-fold symmetry, Voronoi polyhedron, and bond orientational order parameters, we find a significant structural evolution at high-frequency magnetic annealing: the icosahedral order diminishes, and the crystalline-like order is enhanced, comparing to the case without magnetic field. The fraction of the body-centered cubic structures remarkably increases with the frequency of magnetic annealing, and the atoms of these order show a tendency of aggregating in space to form the crystalline nuclei. These findings unveil how the local structure evolves under magnetic annealing, and the accelerated crystallization process of MGs through alternating magnetic fields.

Key words: metallic glasses, magnetic annealing, crystallization behavior

中图分类号:  (Metallic glasses)

  • 64.70.pe
61.43.-j (Disordered solids)