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Domain walls confined in magnetic nanotubes with uniaxial anisotropy
Authors:AP Chen  J Gonzalez  KY Guslienko
Institution:1. Depto. Fisica de Materiales, Facultad Químicas, Universidad del Pais Vasco, UPV/EHU, 20018 San Sebastián, Spain;2. IKERBASQUE, The Basque Foundation for Science, 48011 Bilbao, Spain
Abstract:We present calculations of the different domain wall structures confined in magnetic nanotubes, such as transverse wall, asymmetric vortex wall, branch fashion wall, and horse-saddle wall. The wall structures were calculated by micromagnetic simulations. The tube radii R=50 nm and 100 nm, and aspect ratios length/radius L/R≤15 were considered. The magnetic phase diagrams of the stability of different kinds of the domain walls were plotted as function of the tube aspect ratio L/R and the tube thickness (difference of the outer and inner tube radii).
Keywords:Domain wall  Magnetic nanotube  Micromagnetism
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