Gao, Y., Ruan, Xuezhong, You, B. et al. (6 more authors) (2016) Depinning of domain walls in permalloy nanowires with asymmetric notches. Scientific Reports. 32617. ISSN 2045-2322
Abstract
E ective control of the domain wall (DW) motion along the magnetic nanowires is of great importance for fundamental research and potential application in spintronic devices. In this work, a series of permalloy nanowires with an asymmetric notch in the middle were fabricated with only varying the width (d) of the right arm from 200 nm to 1000 nm. The detailed pinning and depinning processes of DWs in these nanowires have been studied by using focused magneto-optic Kerr e ect (FMOKE) magnetometer, magnetic force microscopy (MFM) and micromagnetic simulation. The experimental results unambiguously exhibit the presence of a DW pinned at the notch in a typical sample with d equal to 500 nm. At a certain range of 200 nm < d < 500 nm, both the experimental and simulated results show that the DW can maintain or change its chirality randomly during passing through the notch, resulting in two DW depinning elds. Those two depinning elds have opposite d dependences, which may be originated from di erent potential well/barrier generated by the asymmetric notch with varying d.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © The Author(s) 2016 |
Keywords: | domain wall motion |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) The University of York > Faculty of Sciences (York) > Electronic Engineering (York) |
Depositing User: | Pure (York) |
Date Deposited: | 21 Jun 2017 11:00 |
Last Modified: | 16 Oct 2024 13:51 |
Published Version: | https://doi.org/10.1038/srep32617 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1038/srep32617 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:117990 |
Download
Filename: srep32617.pdf
Description: Depinning of domain walls in permalloy nanowires with asymmetric notches
Licence: CC-BY 2.5