TITLE

Magnetic domain wall pinning by a curved conduit

AUTHOR(S)

Lewis, E. R.; Petit, D.; Thevenard, L.; Jausovec, A. V.; O’Brien, L.; Read, D. E.; Cowburn, R. P.

PUB. DATE

October 2009

SOURCE

Applied Physics Letters;10/12/2009, Vol. 95 Issue 15, p152505

SOURCE TYPE

Academic Journal

DOC. TYPE

Article

ABSTRACT

The pinning of a magnetic domain wall in a curved Permalloy (NiFe) nanostrip is experimentally studied. We examine the dependence of the pinning on both the radius of curvature of the bend and the chirality of the transverse domain wall. We find that bends act as potential wells or potential barriers depending on the chirality of the domain wall; the pinning field in both cases increases with decreasing radius of curvature. Micromagnetic simulations are consistent with the experimental results and show that both exchange and demagnetizing energies play an important role.

ACCESSION #

44665212

 

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