• Chinese Physics B
  • Vol. 29, Issue 9, (2020)
Xiao-Ping Ma1, Hong-Guang Piao1、†, Lei Yang1, Dong-Hyun Kim2, Chun-Yeol You3, and Liqing Pan1
Author Affiliations
  • 1Research Institute for Magnetoelectric & Weak Magnetic-field Detection, College of Science, China Three Gorges University, Yichang 443002, China
  • 2Department of Physics, Chungbuk National University, Cheongju 8644, Chungbuk, Republic of Korea
  • 3Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
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    DOI: 10.1088/1674-1056/aba09a Cite this Article
    Xiao-Ping Ma, Hong-Guang Piao, Lei Yang, Dong-Hyun Kim, Chun-Yeol You, Liqing Pan. Asymmetric dynamic behaviors of magnetic domain wall in trapezoid-cross-section nanostrip[J]. Chinese Physics B, 2020, 29(9): Copy Citation Text show less

    Abstract

    Field-driven magnetic domain wall propagation in ferromagnetic nanostrips with trapezoidal cross section has been systematically investigated by means of micromagnetic simulation. Asymmetric dynamic behaviors of domain wall, depending on the propagation direction, were observed under an external magnetic field. When the domain walls propagate in the opposite direction along the long axis of the nanostrip, the Walker breakdown fields as well as the average velocities are different. The asymmetric landscape of demagnetization energies, which arises from the trapezoidal geometry, is the main origin of the asymmetric propagation behavior. Furthermore, a trapezoid-cross-section nanostrip will become a nanotube if it is rolled artificially along its long axis, and thus a two-dimensional transverse domain wall will become a three-dimensional one. Interestingly, it is found that the asymmetric behaviors observed in two-dimensional nanostrips with trapezoidal cross section are similar with some dynamic properties occurring in three-dimensional nanotubes.
    Xiao-Ping Ma, Hong-Guang Piao, Lei Yang, Dong-Hyun Kim, Chun-Yeol You, Liqing Pan. Asymmetric dynamic behaviors of magnetic domain wall in trapezoid-cross-section nanostrip[J]. Chinese Physics B, 2020, 29(9):
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