Transmission XMCD-PEEM imaging of an engineered vertical FEBID cobalt nanowire with a domain wall
arXiv:1702.02083 · doi:10.1088/1361-6528/aa9eff
Abstract
Using focused electron-beam-induced deposition (FEBID), we fabricate vertical, platinum-coated cobalt nanowires with a controlled three-dimensional structure. The latter is engineered to feature bends along the height: these are used as pinning sites for domain walls, the presence of which we investigate using X-ray Magnetic Circular Dichroism (XMCD) coupled to PhotoEmission Electron Microscopy (PEEM). The vertical geometry of our sample combined with the low incidence of the X-ray beam produce an extended wire shadow which we use to recover the wire's magnetic configuration. In this transmission configuration, the whole sample volume is probed, thus circumventing the limitation of PEEM to surfaces. This article reports on the first study of magnetic nanostructures standing perpendicular to the substrate with XMCD-PEEM. The use of this technique in shadow mode enabled us to confirm the presence of a domain wall (DW) without direct imaging of the nanowire.
5 figures with colour, 9 pages
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- Geometry-induced motion of magnetic domain walls in curved nanostripes
- Domain wall automotion in three-dimensional magnetic helical interconnectors
- Imaging three-dimensional magnetic systems with X-rays
- Field tunable three-dimensional magnetic nanotextures in cobalt-nickel nanowires