中国物理B ›› 2017, Vol. 26 ›› Issue (11): 117503-117503.doi: 10.1088/1674-1056/26/11/117503

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Effects of dipolar interactions on magnetic properties of Co nanowire arrays

Hong-Jian Li(李洪健), MingYue(岳明), Qiong Wu(吴琼), Yi Peng(彭懿), Yu-Qing Li(李玉卿), Wei-Qiang Liu(刘卫强), Dong-Tao Zhang(张东涛), Jiu-Xing Zhang(张久兴)   

  1. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
  • 收稿日期:2017-06-04 修回日期:2017-09-30 出版日期:2017-11-05 发布日期:2017-11-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51401001, 51371002, and 51331003) and the International S&T Cooperation Program of China (Grant No. 2015DFG52020).

Effects of dipolar interactions on magnetic properties of Co nanowire arrays

Hong-Jian Li(李洪健), MingYue(岳明), Qiong Wu(吴琼), Yi Peng(彭懿), Yu-Qing Li(李玉卿), Wei-Qiang Liu(刘卫强), Dong-Tao Zhang(张东涛), Jiu-Xing Zhang(张久兴)   

  1. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
  • Received:2017-06-04 Revised:2017-09-30 Online:2017-11-05 Published:2017-11-05
  • Contact: MingYue E-mail:yueming@bjut.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51401001, 51371002, and 51331003) and the International S&T Cooperation Program of China (Grant No. 2015DFG52020).

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摘要： Magnetic properties and magnetization processes of Co nanowire arrays with various packing densities are investigated by means of object-oriented micromagnetic framework (OOMMF) software package with finite difference micromagnetic simulations. The packing density of nanowires is changed with the diameter, number of nanowires and center-to-center spacing between the wires. The magnetization reversal mechanism and squareness of the hysteresis loops of the nanowire arrays are very sensitive to the packing density of nanowires. Clear steps and plateaux on the demagnetization are visible, which turns out that dipolar interactions among the wires have a significant influence on switching field.

关键词: micromagnetic simulations, cobalt nanowires, magnetization reversal mechanism, magnetic properties

Abstract: Magnetic properties and magnetization processes of Co nanowire arrays with various packing densities are investigated by means of object-oriented micromagnetic framework (OOMMF) software package with finite difference micromagnetic simulations. The packing density of nanowires is changed with the diameter, number of nanowires and center-to-center spacing between the wires. The magnetization reversal mechanism and squareness of the hysteresis loops of the nanowire arrays are very sensitive to the packing density of nanowires. Clear steps and plateaux on the demagnetization are visible, which turns out that dipolar interactions among the wires have a significant influence on switching field.

Key words: micromagnetic simulations, cobalt nanowires, magnetization reversal mechanism, magnetic properties

中图分类号:  (Micromagnetic simulations ?)

  • 75.78.Cd
78.67.Uh (Nanowires) 75.60.Jk (Magnetization reversal mechanisms) 75.75.-c (Magnetic properties of nanostructures)