Depinning of domain walls in permalloy nanowires with asymmetric notches
10.1038/srep32617
Crossref journal-article
Springer Science and Business Media LLC
Scientific Reports (297)
Abstract

AbstractEffective 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 effect (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 fields. Those two depinning fields have opposite d dependences, which may be originated from different potential well/barrier generated by the asymmetric notch with varying d.

Bibliography

Gao, Y., You, B., Ruan, X. Z., Liu, M. Y., Yang, H. L., Zhan, Q. F., Li, Z., Lei, N., Zhao, W. S., Pan, D. F., Wan, J. G., Wu, J., Tu, H. Q., Wang, J., Zhang, W., Xu, Y. B., & Du, J. (2016). Depinning of domain walls in permalloy nanowires with asymmetric notches. Scientific Reports, 6(1).

Authors 17
  1. Y. Gao (first)
  2. B. You (additional)
  3. X. Z. Ruan (additional)
  4. M. Y. Liu (additional)
  5. H. L. Yang (additional)
  6. Q. F. Zhan (additional)
  7. Z. Li (additional)
  8. N. Lei (additional)
  9. W. S. Zhao (additional)
  10. D. F. Pan (additional)
  11. J. G. Wan (additional)
  12. J. Wu (additional)
  13. H. Q. Tu (additional)
  14. J. Wang (additional)
  15. W. Zhang (additional)
  16. Y. B. Xu (additional)
  17. J. Du (additional)
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Dates
Type When
Created 8 years, 11 months ago (Sept. 7, 2016, 6:26 a.m.)
Deposited 2 years, 7 months ago (Jan. 4, 2023, 6:43 p.m.)
Indexed 4 months, 1 week ago (April 23, 2025, 6:26 a.m.)
Issued 8 years, 11 months ago (Sept. 7, 2016)
Published 8 years, 11 months ago (Sept. 7, 2016)
Published Online 8 years, 11 months ago (Sept. 7, 2016)
Funders 0

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@article{Gao_2016, title={Depinning of domain walls in permalloy nanowires with asymmetric notches}, volume={6}, ISSN={2045-2322}, url={http://dx.doi.org/10.1038/srep32617}, DOI={10.1038/srep32617}, number={1}, journal={Scientific Reports}, publisher={Springer Science and Business Media LLC}, author={Gao, Y. and You, B. and Ruan, X. Z. and Liu, M. Y. and Yang, H. L. and Zhan, Q. F. and Li, Z. and Lei, N. and Zhao, W. S. and Pan, D. F. and Wan, J. G. and Wu, J. and Tu, H. Q. and Wang, J. and Zhang, W. and Xu, Y. B. and Du, J.}, year={2016}, month=sep }