NDLI: Adjustment of Demagnetizing Field in Permalloy Nanowires to Control Domain Wall Motion

Content Provider	IEEE Xplore Digital Library
Author	Kuei-Chang Hu Hong-Yo Lu Chia-Chi Chang Hao-Hsuan Chen Feng-Sheng Wu Chao-Hsien Huang Tian-Chiuan Wu Lin, L. Jong-Ching Wu Horng, L.
Copyright Year	1965
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 the Walker 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.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	3
Page Count	3
File Size	622305
File Format	PDF
ISSN	00189464
Volume Number	50
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Nanowires Demagnetization Magnetic domains Wires Electric breakdown Magnetic domain walls walker breakdown Demagnetizing field domain wall motion Landau-Lifshitz-Gilbert (LLG) simulation
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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