Switch from Bloch to Nèel DWs

Analytic theory for the switch from Bloch to Néel domain wall in nanowires with perpendicular anisotropy
M. D. DeJong and K. L. Livesey
Phys. Rev. B 92, 214420 (2015)

(a) The geometry of a rectangular nanowire with perpendicular magnetic anisotropy, width w and thickness d. Arrows show the direction of magnetization. Depending on the size of w and d, the lowest energy domain wall may be of (b) Bloch or (c) Néel type. In the Bloch wall, the magnetization rotates perpendicular to the wire's long z axis, in the x−y plane. In the Néel wall, the magnetization rotates along the wire's long z axis, in the y−z plane.