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

Abstract : 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.
Complete list of metadatas

Cited literature [19 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00453804
Contributor : Jan Vogel <>
Submitted on : Thursday, January 13, 2011 - 11:42:20 AM
Last modification on : Thursday, April 4, 2019 - 9:44:02 AM
Long-term archiving on : Thursday, April 14, 2011 - 2:41:07 AM

Files

Uhlir_CondMat_v2.pdf
Files produced by the author(s)

Identifiers

Citation

Vojtech Uhlîr, Stefania Pizzini, Nicolas Rougemaille, Vincent Cros, Erika Jimenez, et al.. Direct observation of Oersted-field-induced magnetization dynamics in magnetic nanostripes. Physical Review B : Condensed matter and materials physics, American Physical Society, 2011, 83, pp.020406. ⟨10.1103/PhysRevB.83.020406⟩. ⟨hal-00453804v3⟩

Share

Metrics

Record views

735

Files downloads

420