title: Magnetic Configurations in Co/Cu Multilayered Nanowires: Evidence of Structural and Magnetic Interplay.
abstract: Off-axis electron holography experiments have been combined with micromagnetic simulations to study the remnant magnetic states of electrodeposited Co/Cu multilayered nanocylinders. Structural and chemical data obtained by transmission electron microscopy have been introduced in the simulations. Three different magnetic configurations such as an antiparallel coupling of the Co layers, coupled vortices, and a monodomain-like state have been quantitatively mapped and simulated. While most of the wires present the same remnant state whatever the direction of the saturation field, we show that some layers can present a change from an antiparallel coupling to vortices. Such a configuration can be of particular interest to design nano-oscillators with two different working frequencies.
authors.affiliation: CEMES CNRS-UPR 8011, Université de Toulouse , 31055 Toulouse, France.
authors.forename: D
authors.initials: D
authors.lastname: Reyes
authors.affiliation: CEMES CNRS-UPR 8011, Université de Toulouse , 31055 Toulouse, France.
authors.forename: N
authors.initials: N
authors.lastname: Biziere
authors.affiliation: CEMES CNRS-UPR 8011, Université de Toulouse , 31055 Toulouse, France.
authors.forename: B
authors.initials: B
authors.lastname: Warot-Fonrose
authors.affiliation: Laboratoire des Solides Irradiés, Ecole Polytechnique, CNRS, CEA, Université Paris Saclay , F 91128 Palaiseau, France.
authors.forename: T
authors.initials: T
authors.lastname: Wade
authors.affiliation: CEMES CNRS-UPR 8011, Université de Toulouse , 31055 Toulouse, France.
authors.forename: C
authors.initials: C
authors.lastname: Gatel
keywords: Magnetic configuration; antiparallel coupling; electron holography; magnetic materials; micromagnetic simulation; nanowire; vortex state