Direct observation of Oersted-field-induced magnetization dynamics in magnetic nanowires - Archive ouverte HAL Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2010

Direct observation of Oersted-field-induced magnetization dynamics in magnetic nanowires

Résumé

We have used time-resolved x-ray photoemission electron microscopy to investigate the magnetization dynamics induced by nanosecond current pulses in NiFe/Cu/Co nanostripes. A large tilt of the NiFe magnetization in the direction transverse to the stripe is observed during the pulses. We show that this effect cannot be quantitatively understood from the amplitude of the Oersted field and the shape anisotropy. High frequency oscillations observed at the onset of the pulses are attributed to precessional motion of the NiFe magnetization about the effective field. We discuss the possible origins of the large magnetization tilt and the potential implications of the static and dynamic effects of the Oersted field on current-induced domain wall motion in such stripes.
Fichier principal
Vignette du fichier
Uhlir_Oersted_CondMat.pdf (1.03 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00453804 , version 1 (05-02-2010)
hal-00453804 , version 2 (11-02-2010)
hal-00453804 , version 3 (13-01-2011)

Identifiants

Citer

Vojtech Uhlîr, Stefania Pizzini, Nicolas Rougemaille, Vincent Cros, Erika Jimenez, et al.. Direct observation of Oersted-field-induced magnetization dynamics in magnetic nanowires. 2010. ⟨hal-00453804v2⟩
656 Consultations
489 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More