title: Magnetic multilayers on nanospheres.
abstract: Thin-film technology is widely implemented in numerous applications. Although flat substrates are commonly used, we report on the advantages of using curved surfaces as a substrate. The curvature induces a lateral film-thickness variation that allows alteration of the properties of the deposited material. Based on this concept, a variety of implementations in materials science can be expected. As an example, a topographic pattern formed of spherical nanoparticles is combined with magnetic multilayer film deposition. Here we show that this combination leads to a new class of magnetic material with a unique combination of remarkable properties: The so-formed nanostructures are monodisperse, magnetically isolated, single-domain, and reveal a uniform magnetic anisotropy with an unexpected switching behaviour induced by their spherical shape. Furthermore, changing the deposition angle with respect to the particle ensemble allows tailoring of the orientation of the magnetic anisotropy, which results in tilted nanostructure material.
authors.affiliation: University of Konstanz, Department of Physics, D-78457 Konstanz, Germany. manfred.albrecht@uni-konstanz.de
authors.forename: Manfred
authors.initials: M
authors.lastname: Albrecht
authors.forename: Guohan
authors.initials: G
authors.lastname: Hu
authors.forename: Ildico L
authors.initials: IL
authors.lastname: Guhr
authors.forename: Till C
authors.initials: TC
authors.lastname: Ulbrich
authors.forename: Johannes
authors.initials: J
authors.lastname: Boneberg
authors.forename: Paul
authors.initials: P
authors.lastname: Leiderer
authors.forename: Günter
authors.initials: G
authors.lastname: Schatz
mesh_terms: D003035:Cobalt / Q000737:chemistry; D008280:Magnetics; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology; D010165:Palladium / Q000737:chemistry
chemical_list: D003035:Cobalt; D010165:Palladium