Article Dans Une Revue Journal of Magnetism and Magnetic Materials Année : 2016

Manipulating the magnetization direction of transverse domain walls in Permalloy/Ir strips using nanosecond current pulses

Résumé

Using magnetic force microscopy and micromagnetic simulations, we studied the effect of Oersted magnetic fields on the chirality of transverse magnetic domain walls in Fe$_{20}$Ni$_{80}$/Ir bilayer nanostrips. Applying nanosecond current pulses with a current density of around $2\times10^{12}$ A/m$^2$, the chirality of a transverse domain wall could be switched reversibly and reproducibly. These current densities are similar to the ones used for current-induced domain wall motion, indicating that the Oersted field may stabilize the transverse wall chirality during current pulses and prevent domain wall transformations.

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hal-00919049 , version 1 (17-12-2013)

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Zahid Ishaque, Van-Dai Nguyen, Olivier Fruchart, Stefania Pizzini, N. Rougemaille, et al.. Manipulating the magnetization direction of transverse domain walls in Permalloy/Ir strips using nanosecond current pulses. Journal of Magnetism and Magnetic Materials, 2016, 397, pp.152-156. ⟨10.1016/j.jmmm.2015.08.062⟩. ⟨hal-00919049⟩

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