Switching behavior of vortex structures in nanodisks

Author

Pulwey, Ralph ; Rahm, Michael ; Biberger, Josef ; Weiss, Dieter

Author_Institution

Inst. fur Exp. & Angewandte Phys., Regensburg Univ., Germany

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2076

Lastpage

2078

Abstract

This work presents an experimental investigation of the switching behavior of single Co- and permalloy (Py) nanodisks employing magnetic force microscopy (MFM) and micro Hall magnetometry. We used both methods to study the magnetization reversal of individual disks with diameters between 200 nm and 2 μm and thicknesses between 5 nm and 60 nm with a magnetic vortex phase. It is shown, that the helicity of the vortex (clockwise or counterclockwise) is independent of the direction of the normal component in the center, and vice versa. By an externally applied field it is possible to switch the direction of the central out of plane component selectively

Keywords

Permalloy; cobalt; ferromagnetic materials; magnetic force microscopy; magnetic particles; magnetic switching; magnetisation reversal; nanostructured materials; 200 nm to 2 mum; 5 to 60 nm; Co; MFM; NiFe; externally applied field; magnetic force microscopy; magnetic vortex phase; magnetization reversal; micro Hall magnetometry; nanodisks; permalloy; switching behavior; vortex structures; Clocks; Etching; Magnetic flux; Magnetic force microscopy; Magnetic forces; Magnetic switching; Magnetization reversal; Nanostructures; Packaging; Switches;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951058

Filename

951058