Field- and current-induced domain-wall motion in permalloy nanowires with magnetic soft spots

被引：30

作者：

Vogel, Andreas ^{[1
,2
]}

Wintz, Sebastian ^{[3
]}

Gerhardt, Theo ^{[1
,2
]}

Bocklage, Lars ^{[1
,2
]}

Strache, Thomas ^{[3
]}

Im, Mi-Young ^{[4
]}

Fischer, Peter ^{[4
]}

Fassbender, Juergen ^{[3
]}

McCord, Jeffrey ^{[3
]}

Meier, Guido ^{[1
,2
]}

机构：

[1] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany

[2] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany

[3] Helmholtz Zentrum Dresden Rossendorf, Inst Ionenstrahlphys & Mat Forsch, D-01314 Dresden, Germany

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 20期

关键词：

IMPLANTATION;

D O I：

10.1063/1.3590267

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study field- and current-induced domain-wall motion in permalloy nanowires containing a square-shaped magnetically softened region. Implantation of chromium ions is used to induce pinning sites via a local reduction in the saturation magnetization. Micromagnetic simulations, magnetic transmission soft x-ray microscopy, and electrical measurements are employed to characterize the pinning potential which significantly differs for transverse and vortex walls. Reliable domain-wall depinning from a so-called magnetic soft spot by single current pulses is observed. This demonstrates the suitability of these pinning sites for applications. (C) 2011 American Institute of Physics. [doi:10.1063/1.3590267]

引用

页数：3

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