Pinning induced by inter-domain wall interactions in planar magnetic nanowires

Journal Article · Fri Oct 30 00:00:00 EDT 2009 · Applied Physics Letters

OSTI ID:981339

Hayward, T J; Bryan, M T; Fry, P W; Fundi, P M; Gibbs, M R.J.; Allwood, D A; Im, M -Y; Fischer, P

We have investigated pinning potentials created by inter-domain wall magnetostatic interactions in planar magnetic nanowires. We show that these potentials can take the form of an energy barrier or an energy well depending on the walls' relative monopole moments, and that the applied magnetic fields required to overcome these potentials are significant. Both transverse and vortex wall pairs are investigated and it is found that transverse walls interact more strongly due to dipolar coupling between their magnetization structures. Simple analytical models which allow the effects of inter-domain wall interactions to be estimated are also presented.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Materials Sciences Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 981339
• Report Number(s): LBNL-2965E; APPLAB; TRN: US201012%%1314
• Journal Information: Applied Physics Letters, Vol. 96, Issue 5; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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MAGNETIC FIELDS
MAGNETIZATION
MONOPOLES