Magnetization Reversal in the Single Epitaxial Co(111) Nanowires With Step-Induced Anisotropy

Author

Davydenko, A.V. ; Pustovalov, E.V. ; Ognev, A.V. ; Chebotkevich, L.A.

Author_Institution

Sch. of Natural Sci., Far Eastern Fed. Univ., Vladivostok, Russia

Volume

48

Issue

11

fYear

2012

Firstpage

3128

Lastpage

3131

Abstract

A systematic investigation of the magnetization reversal processes is carried out for the single epitaxial Co(111) nanowires possessing step-induced magnetic anisotropy with the easy direction of magnetization oriented perpendicular to the long wire axis. Wires of varying width (500-1800 nm) were patterned by focus ion-beam etching. We separated 3 regions of the NW width: the first is characterized by dominating step-induced magnetic anisotropy, in the second shape anisotropy prevails and in the third two anisotropies are in competition. We establish experimentally mechanisms of the magnetization reversal in the Co(111) nanowires in the directions of magnetic field parallel and perpendicular to the long wire axis in each separated region.

Keywords

cobalt; focused ion beam technology; magnetic anisotropy; magnetic epitaxial layers; magnetisation reversal; metallic epitaxial layers; nanofabrication; nanomagnetics; nanowires; sputter etching; focus ion-beam etching; magnetization reversal; shape anisotropy; single epitaxial Co(111) nanowires; size 500 nm to 1800 nm; step-induced magnetic anisotropy; Magnetic domains; Magnetic hysteresis; Magnetization; Magnetization reversal; Perpendicular magnetic anisotropy; Wires; Magnetic anisotropy; magnetic force microscopy (MFM); magnetization reversal; nanowires;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2195719

Filename

6332676