title: Template-directed FeCo nanoshells on AuCu.
abstract: Schematic AuCu/FeCo core-shell magnetic nanoparticles: FeCo shell is precisely synthesized on non-magnetic AuCu core to form the core/shell nanostructures. Due to the non-magnetic AuCu core, the FeCo shell exhibits a transition from single domain to magnetic vortex state.
authors.affiliation: Department of Chemistry, University of Kansas, Lawrence, KS, 66045, USA.
authors.forename: Maogang
authors.initials: M
authors.lastname: Gong
authors.forename: Alec
authors.initials: A
authors.lastname: Kirkeminde
authors.forename: Ralph
authors.initials: R
authors.lastname: Skomski
authors.forename: Jun
authors.initials: J
authors.lastname: Cui
authors.forename: Shenqiang
authors.initials: S
authors.lastname: Ren
keywords: AuCu; FeCo; core/shell nanoparticles; nanomagnetism; vortex