Vortex domain interaction and surface pinning effects of 10 nm to 80 nm magnetic nanoislands

Author

Hung, S.T. ; Tang, Y.J. ; Wong, C.Y.

Author_Institution

Magnetic Innovation Center (MAGIC), Hong Kong Univ. of Sci. & Technol., China

fYear

2002

Abstract

Summary form only given. The authors study the vortex domain nanoislands, with the length-to-width ratio (LTW) and inter-island edge distance (IED) as parameters. Co rectangular dots with "fan-type" vortex domain were studied by magnetic force microscopy (MFM). Multivortices appear as the LTW increases and vortices coalesce. As the IED decreases, magnetostatic interactions become stronger and vortex domains change to combined Bloch and Neel domain walls. Some vortices disappear.

Keywords

cobalt; discontinuous metallic thin films; magnetic domain walls; magnetic force microscopy; magnetic particles; nanoparticles; quantum dots; 10 to 80 nm; Bloch domain walls; Co; MFM; Neel domain walls; fan-type vortex domain; inter-island edge distance; length-to-width ratio; magnetic force microscopy; magnetic nanoislands; magnetostatic interactions; multivortices; rectangular dots; surface pinning effects; vortex domain interaction; vortices coalescence; Magnetic anisotropy; Magnetic domains; Magnetic flux; Magnetic force microscopy; Magnetosphere; Magnetostatics; Micromagnetics; Perpendicular magnetic anisotropy; Saturation magnetization; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International

Conference_Location

Amsterdam, The Netherlands

Print_ISBN

0-7803-7365-0

Type

conf

DOI

10.1109/INTMAG.2002.1001210

Filename

1001210