Magnetic domain wall dynamics in a permalloy nanowire

被引：34

作者：

Atkinson, D ^{[1
]}

Allwood, DA ^{[1
]}

Faulkner, CC ^{[1
]}

Xiong, G ^{[1
]}

Cooke, MD ^{[1
]}

Cowburn, RP ^{[1
]}

机构：

[1] Univ Durham, Dept Phys, Durham DH1 3HP, England

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2003年 / 39卷 / 05期

关键词：

domain walls; magnetic nanostructure; permalloy; thermal activation;

D O I：

10.1109/TMAG.2003.815548

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Experimental results of domain wall propagation velocity as a function of applied field in a 200-nm-wide permalloy nanostructure are presented. The structure was fabricated by focused-ion beam milling and designed to separate the domain wall nucleation from propagation. The measured velocities are very high, tip to 1500 m/s at 49 Oe and the field dependence of the velocity is interpreted in terms of thermally activated wall motion through a series of pinning sites and a wall geometry that changes as a function of field.

引用

页码：2663 / 2665

页数：3

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