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- W2783281946 abstract "Micromagnetic simulations of magnetization reversal were performed for magnetic nanotubes of a finite length, L, equal to 1 and 2 μm, 50 and 100 nm radii, R, and uniaxial anisotropy with “easy axis” parallel to the tube length. I.e., we considered relatively short nanotubes with the aspect ratio L/R in the range 10–40. The non-uniform curling magnetization states on both ends of the nanotubes can be treated as vortex domain walls (DW). The domain wall length, Lc, depends on the tube geometric parameters and the anisotropy constant Ku, and determines the magnetization reversal mode, as well as the switching field value. For nanotubes with relative small values of Lc (Lc/L < 0.2) the magnetization reversal process is characterized by flipping of the magnetization in the middle uniform state. Whereas, for relative large values of Lc, in the reverse magnetic field, coupling of two vortex domain walls with opposite magnetization rotation directions results in the formation of a specific narrow Néel type DW in the middle of the nanotube. The nanotube magnetization suddenly aligns to the applied field at the switching field, collapsing the central DW." @default.
- W2783281946 created "2018-01-26" @default.
- W2783281946 creator A5086853191 @default.
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- W2783281946 date "2018-01-10" @default.
- W2783281946 modified "2023-10-03" @default.
- W2783281946 title "Magnetization Reversal Modes in Short Nanotubes with Chiral Vortex Domain Walls" @default.
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- W2783281946 doi "https://doi.org/10.3390/ma11010101" @default.
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