title: Three dimensional magnetic nanowires grown by focused electron-beam induced deposition.
abstract: Control of the motion of domain walls in magnetic nanowires is at the heart of various recently proposed three-dimensional (3D) memory devices. However, fabricating 3D nanostructures is extremely complicated using standard lithography techniques. Here we show that highly pure 3D magnetic nanowires with aspect-ratios of ~100 can be grown using focused electron-beam-induced-deposition. By combining micromanipulation, Kerr magnetometry and magnetic force microscopy, we determine that the magnetisation reversal of the wires occurs via the nucleation and propagation of domain walls. In addition, we demonstrate that the magnetic switching of individual 3D nanostructures can be directly probed by magneto-optical Kerr effect.
authors.affiliation: Thin Film Magnetism Group, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge UK, CB3 0HE. af457@cam.ac.uk
authors.forename: Amalio
authors.initials: A
authors.lastname: Fernández-Pacheco
authors.forename: Luis
authors.initials: L
authors.lastname: Serrano-Ramón
authors.forename: Jan M
authors.initials: JM
authors.lastname: Michalik
authors.forename: M Ricardo
authors.initials: MR
authors.lastname: Ibarra
authors.forename: José M
authors.initials: JM
authors.lastname: De Teresa
authors.forename: Liam
authors.initials: L
authors.lastname: O'Brien
authors.forename: Dorothée
authors.initials: D
authors.lastname: Petit
authors.forename: Jihyun
authors.initials: J
authors.lastname: Lee
authors.forename: Russell P
authors.initials: RP
authors.lastname: Cowburn