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Title: Dynamics of three-dimensional helical domain wall in cylindrical NiFe nanowires
Authors: Wong, De Wei
Chandra Sekhar, M.
Gan, Wei Liang
Purnama, Indra
Lew, Wen Siang
Keywords: DRNTU::Science::Physics
Issue Date: 2015
Source: Wong, D. W., Chandra Sekhar, M., Gan, W. L., Purnama, I., & Lew, W. S. (2015). Dynamics of three-dimensional helical domain wall in cylindrical NiFe nanowires. Journal of applied physics, 117, 17A747-.
Series/Report no.: Journal of applied physics
Abstract: We report on a micromagnetic study on the dynamics of current-driven helical domain wall (DW) in cylindrical NiFe nanowires. The helical DW is a three-dimensional transition region between magnetizations with clockwise and anticlockwise vortex orientations. A minimum current density is needed to overcome an intrinsic pinning to drive the helical DW, and the propagation along the nanowire is accompanied by a rotational motion. As the driving current strength is increased, the rotation ceases while the DW propagates at an increased velocity. However, a velocity barrier is experienced which results in the decrease of the DW mobility. Throughout its motion, the propagated helical DW maintains a stable profile without showing any sign of structural breakdown even at relatively high driving current.
ISSN: 0021-8979
DOI: 10.1063/1.4919045
Rights: © 2015 AIP Publishing LLC. This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of AIP Publishing LLC. The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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