Direct observation of changes to domain wall structures in magnetic nanowires of varying width

O'Shea, K.J., McVitie, S. , Chapman, J.N. and Weaver, J.M.R. (2008) Direct observation of changes to domain wall structures in magnetic nanowires of varying width. Applied Physics Letters, 93(20), p. 202505. (doi:10.1063/1.3023048)

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Publisher's URL: http://dx.doi.org/10.1063/1.3023048

Abstract

Lorentz microscopy has been used to explore the structure variation of domain walls in thin Permalloy nanowires in the vicinity of symmetric triangular antinotches. The antinotches present a complex potential landscape to domain walls. Walls can be trapped in front of, partly enter, or be trapped inside the antinotches according to the geometry of the latter and, in the case of vortex domain walls, the chirality. In all cases, the magnetization distribution was determined. Of particular note was the structure the wall assumed during depinning from the antinotch, complex forms extending over distances several times the wire width being observed

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McVitie, Professor Stephen and Weaver, Professor Jonathan and O'Shea, Miss Kerry and Chapman, Professor John
Authors: O'Shea, K.J., McVitie, S., Chapman, J.N., and Weaver, J.M.R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Applied Physics Letters
ISSN:0003-6951

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
402831Spin@RT: Room Temperature SpintronicsJohn ChapmanEngineering & Physical Sciences Research Council (EPSRC)EP/D003199/1Science and Engineering College Senior Management