Influence of geometry on domain wall propagation in a mesoscopic wire

Author

Wunderlich, J. ; Ravelosona, D. ; Chappert, C. ; Cayssol, F. ; Mathet, V. ; Ferré, J. ; Jamet, J.P. ; Thiaville, A.

Author_Institution

Inst. d´´Electron. Fondamentale, CNRS, Orsay, France

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2104

Lastpage

2107

Abstract

The propagation of a single magnetic Bloch domain wall (DW) in a mesoscopic wire is studied by use of the extraordinary Hall effect. Whereas a straight DW propagates freely in a wire with constant lateral width, the propagation in a Hall cross reveals that both DW shape and DW velocity vary strongly as a function of DW position. These results give the first experimental evidence that the dynamical properties of a magnetic DW in a patterned structure are strongly affected by the device geometry. This has to be taken into account for future applications to spin electronic devices

Keywords

Hall effect; magnetic domain walls; magnetisation reversal; device geometry; domain wall propagation; dynamical properties; extraordinary Hall effect; geometry; mesoscopic wire; single magnetic Bloch domain wall; Geometry; Hall effect; Magnetic devices; Magnetic domain walls; Magnetic domains; Magnetization reversal; Motion detection; Perpendicular magnetic recording; Shape; Wire;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951067

Filename

951067