Fig. 3: Studying anisotropic magnetoresistance (AMR) hysteresis.
From: Self-assembly as a tool to study microscale curvature and strain-dependent magnetic properties
a Top panel: AMR measurement on rolled-down stripe (length = 550 µm, width = 15 µm, thickness = 100 nm) with field sweep from negative to positive values along the stripe’s long axis. The black arrow inside the plot shows the field sweep direction and the red arrow points at the saturation field. Middle panel: the optical image of the self-assembled rolled-down stripe with four contacted wires, the area surrounded by a light blue dashed line is the area imaged in Kerr microscopy. Scale bar, 100 µm. Bottom panel: Magnetic domain states imaged at different stages of field sweep. Scale bar, 15 µm. b Top panel: AMR signal calculated for magnetization reversal of a simulated Permalloy planar stripe (length = 8 µm, width = 0.8 µm, thickness = 100 nm) with uniaxial magnetic anisotropy [(Ku)y = 40 kJ m−3] transverse to stripe’s axis (y-axis). Middle panel: schematic view of the simulated stripe with transverse magnetic anisotropy. Bottom panel: Magnetic domain states of the simulated stripe at different stages of the field sweep. Scale bar, 0.8 µm.
