Adjustment of demagnetizing field in permalloy nanowires to control domain wall motion

Kuei Chang Hu; Hong Yo Lu; Chia Chi Chang; Hao Hsuan Chen; Feng Sheng Wu; Chao Hsien Huang; Tian Chiuan Wu; L. Lin; Jong Ching Wu; Lance Horng

doi:10.1109/TMAG.2013.2273571

Adjustment of demagnetizing field in permalloy nanowires to control domain wall motion

Kuei Chang Hu, Hong Yo Lu, Chia Chi Chang, Hao Hsuan Chen, Feng Sheng Wu, Chao Hsien Huang, Tian Chiuan Wu, L. Lin, Jong Ching Wu, Lance Horng

物理學系

研究成果: Article › 同行評審

3 引文斯高帕斯（Scopus）

摘要

The domain wall motion in permalloy nanowires has been investigated widely due to its potential for a new type of memory. In this paper. we use the LLG Simulator based on the Landau-Lifshitz-Gilbert (LLG) equation to investigate the field-driven domain-wall motion in a long, straight ferromagnetic strip. An injection field of 60 Oe is applied to inject a domain wall from an extended disk into the nanowire. We found a dependence of nanowire dimensions with the velocity of domain wall. By increasing the width of the nanowire, the velocity of the domain wall motion also increases, while theWalker breakdown field (H_WB) decreases. On the other hand, increasing the thicknesses of the nanowire, the domain wall velocity, H_WB, and demagnetizing field all decrease. By applying a vertical field from 0 to 1000 Oe in order to enhance the demagnetizing field, it is found the H_WB is increased from 16 to 20 Oe.

原文	English
文章編號	2273571
期刊	IEEE Transactions on Magnetics
卷	50
發行號	1
DOIs	https://doi.org/10.1109/TMAG.2013.2273571
出版狀態	Published - 2014 一月

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2013.2273571

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abstract = "The domain wall motion in permalloy nanowires has been investigated widely due to its potential for a new type of memory. In this paper. we use the LLG Simulator based on the Landau-Lifshitz-Gilbert (LLG) equation to investigate the field-driven domain-wall motion in a long, straight ferromagnetic strip. An injection field of 60 Oe is applied to inject a domain wall from an extended disk into the nanowire. We found a dependence of nanowire dimensions with the velocity of domain wall. By increasing the width of the nanowire, the velocity of the domain wall motion also increases, while theWalker breakdown field (HWB) decreases. On the other hand, increasing the thicknesses of the nanowire, the domain wall velocity, HWB, and demagnetizing field all decrease. By applying a vertical field from 0 to 1000 Oe in order to enhance the demagnetizing field, it is found the HWB is increased from 16 to 20 Oe.",

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AU - Hu, Kuei Chang

AU - Lu, Hong Yo

AU - Chang, Chia Chi

AU - Chen, Hao Hsuan

AU - Wu, Feng Sheng

AU - Huang, Chao Hsien

AU - Wu, Tian Chiuan

AU - Lin, L.

AU - Wu, Jong Ching

AU - Horng, Lance

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