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

作者：Ishaque Muhammad Zahid; Van Dai Nguyen; Rougemaille Nicolas; Fruchart Olivier; Pizzini Stefania; Perl Svenja; Ranno Laurent; Toussaint Jean Christophe; Vogel Jan^*

来源：Journal of Magnetism and Magnetic Materials, 2016, 397: 152-156.

DOI：10.1016/j.jmmm.2015.08.062

• Domain walls
• Oersted field
• Current-induced domain wall motion
• Micromagnetic simulations

Using magnetic force microscopy and micromagnetic simulations, we studied the effect of Oersted magnetic fields on transverse magnetic domain walls in Fe2.0Ni80/lr bilayer nanostrips. Applying nanosecond current pulses with a current density of around 2 x 10(12) A/m(2), the magnetization direction of a transverse domain wall in the Fe20Ni80-layer could be switched reversibly and reproducibly. This suggests that in bi- and trilayer strips the Oersted held stabilizes the transverse wall magnetization direction during current-induced domain wall motion and prevents domain wall transformations.

• 出版日期2016-1-1