Formation of Regular Magnetic Domains on Spontaneously Nanostructured Cobalt Filaments

Periodic magnetic domains on cobalt filaments can be stabilized by nanoscale corrugations on the surface, which are spontaneously generated by a unique electrodeposition method. The type of magnetic domains varies from anti-parallel single domains to vortex domains depending on the ratio of the spatial periodicity of the corrugations and the filament width (see figure), and can be experimentally tuned.