Domain Wall Propagation in Wavy Ferromagnetic Nanowire

Author

Piao, H.-G. ; Shim, J.-H. ; Lee, S.-H. ; Djuhana, D. ; Oh, S.K. ; Yu, S.C. ; Kim, D.H.

Author_Institution

Dept. of Phys., Chungbuk Nat. Univ., Cheongju, South Korea

Volume

45

Issue

10

fYear

2009

Firstpage

3926

Lastpage

3929

Abstract

We have investigated magnetic domain wall propagation behavior in wavy nanowires using micromagnetic simulation. The wire width is set to have sinusoidal distortion with variation of spatial frequency and phase. We have analyzed domain wall speed under a constant external field with variation of wavy geometry. Interestingly, with introduction of proper wavy geometry, domain wall speed becomes faster than the speed of domain wall in a straight wire, where a periodic change of domain wall inner structure has been observed with suppression of vortex structure formation.

Keywords

ferromagnetic materials; magnetic domain walls; micromagnetics; nanowires; vortices; constant external field; domain wall inner structure; domain wall speed; magnetic domain wall propagation behavior; micromagnetic simulation; sinusoidal distortion; spatial frequency; straight wire; vortex structure formation; wavy ferromagnetic nanowires; wavy geometry; wire width; Domain wall propagation; ferromagnetic wire; micromagnetic simulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2021668

Filename

5257294