title: Probing the energy barriers and magnetization reversal processes of nanoperforated membrane based percolated media.
abstract: Magnetization reversal processes in Co/Pt multilayers prepared on nanoperforated templates are probed by magnetization relaxation measurements. The signature of pinning controlled domain wall movement as expected for percolated media is identified. This contrasts with the nucleation-type reversal mechanism of a Co/Pt reference film prepared on a smooth substrate. A zero field energy barrier of 93kBT is determined by fluctuation field measurements and is elucidated by micromagnetic calculations using the nudged elastic band method. This value is sufficiently large to qualify the material as a promising percolated medium.
authors.affiliation: Institute for Metallic Materials, IFW Dresden, Helmholtzstraße 20, D-01069 Dresden, Germany. v.neu@ifw-dresden.de
authors.forename: V
authors.initials: V
authors.lastname: Neu
authors.forename: C
authors.initials: C
authors.lastname: Schulze
authors.forename: M
authors.initials: M
authors.lastname: Faustini
authors.forename: J
authors.initials: J
authors.lastname: Lee
authors.forename: D
authors.initials: D
authors.lastname: Makarov
authors.forename: D
authors.initials: D
authors.lastname: Suess
authors.forename: S-K
authors.initials: SK
authors.lastname: Kim
authors.forename: D
authors.initials: D
authors.lastname: Grosso
authors.forename: L
authors.initials: L
authors.lastname: Schultz
authors.forename: M
authors.initials: M
authors.lastname: Albrecht