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dc.contributor.authorTran, M.en
dc.contributor.authorChandra Sekhar, M.en
dc.contributor.authorLiew, H. F.en
dc.contributor.authorHan, G. C.en
dc.contributor.authorPurnama, Indraen
dc.contributor.authorLew, Wen Siangen
dc.identifier.citationChandra, S. M., Liew, H. F., Purnama, I., Lew, W. S., Tran, M., & Han, G. C. (2012). Helical domain walls in constricted cylindrical NiFe nanowires. Applied Physics Letters, 101(15), 152406-.en
dc.description.abstractReducing the magnetic shape anisotropy of a cylindrical NiFe nanowire allows the formation of two vortices with opposite chirality at the two ends. At relatively low aspect ratio these two vortices are connected via a gradual rotation of the magnetization over a short region, which forms a three-dimensional helical domain wall. Micromagnetic simulations reveal that it is possible to control the number of helical domain walls in the cylindrical nanowire by geometrical constrictions engineering. A technique to create constricted Ni95Fe5/Ni87Fe13 multilayered nanowires is demonstrated, and magnetic force microscopy imaging was carried out to confirm the prediction of simulated helical domain walls.en
dc.relation.ispartofseriesApplied physics lettersen
dc.rights© 2012 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. 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.en
dc.titleHelical domain walls in constricted cylindrical NiFe nanowiresen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen
dc.description.versionPublished versionen
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