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

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:397

Article

Ishaque, Muhammad Zahid^1,2,3  Van Dai Nguyen^1,2  Rougemaille, Nicolas^1,2  Fruchart, Olivier^1,2  Pizzini, Stefania^1,2  Perl, Svenja^1,2  Ranno, Laurent^1,2  Toussaint, Jean-Christophe^1,2  Vogel, Jan^1,2 

[1] CNRS, Inst Neel, F-38000 Grenoble, France

[2] Univ Grenoble Alpes, Inst Neel, F-38000 Grenoble, France

[3] Univ Sargodha, Sargodha 40100, Pakistan

关键词: Domain walls;    Oersted field;    Current-induced domain wall motion;    Micromagnetic simulations;   

DOI  :  10.1016/j.jmmm.2015.08.062

来源: Elsevier

【 摘 要 】

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. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free