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

Abstract : 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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https://hal.archives-ouvertes.fr/hal-00919049
Contributor : Jan Vogel <>
Submitted on : Tuesday, December 17, 2013 - 5:08:27 PM
Last modification on : Tuesday, March 16, 2021 - 3:34:05 PM
Long-term archiving on: : Monday, March 17, 2014 - 10:15:47 PM

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Zahid Ishaque, Van-Dai Nguyen, Olivier Fruchart, Stefania Pizzini, Nicolas 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, Elsevier, 2016, 397, pp.152-156. ⟨10.1016/j.jmmm.2015.08.062⟩. ⟨hal-00919049⟩

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