title: Magnetization reversal in magnetic nanostripes via Bloch wall formation.
abstract: We present results of micromagnetic simulations of the magnetization reversal in permalloy nanostripes with 5-10 nm thickness and 200-500 nm width under a longitudinal field of 0.4-16 kA m(-1). The data show four distinct field regions: the well-known regions of uniform and oscillating domain wall movement as well as a process with multiple vortices, and finally a new process including Bloch walls and the generation of vortex-antivortex pairs in the inner part of the stripe rather than at the edges. We investigate this process in detail and derive a criterion for the formation of Bloch walls.
authors.affiliation: Institute of Photonic Technology, Jena, Germany. zeisberger@ipht-jena.de
authors.forename: M
authors.initials: M
authors.lastname: Zeisberger
authors.forename: R
authors.initials: R
authors.lastname: Mattheis