title: Impurity spin magnetization of thin Fe doped Au films
abstract: In order to probe the influence of the surface-induced anisotropy on the impurity spin magnetization, we measure the anomalous Hall effect in thin AuFe films at magnetic fields up to 15 T. The observed suppression of the anomalous Hall resistivity at low fields as well as the appearance of a minimum in the differential Hall resistivity at higher fields can be explained by our theoretical model, which takes into account the influence of a polycrystalline film structure on the surface-induced anisotropy. Our results imply that the apparent discrepancy between different experimental results for the size effects in dilute magnetic alloys can be linked to a different microstructure of the samples.
authors.affiliation: Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium.
authors.initials: E
authors.lastname: Seynaeve
authors.initials: K
authors.lastname: Temst
authors.initials: FG
authors.lastname: Aliev
authors.lastname: Van Haesendonck C
authors.initials: VN
authors.lastname: Gladilin
authors.initials: VM
authors.lastname: Fomin
authors.initials: JT
authors.lastname: Devreese