Magnetic Force Microscopy of Low-Coercivity Ferromagnetic Nanodiscs

Author

Mironov, Victor L. ; Gribkov, Boris A. ; Nikitushkin, Dmitry S. ; Gusev, Sergey A. ; Gaponov, Sergey V. ; Shubin, Andrey B. ; Zhdan, Peter A. ; Binns, Chris

Author_Institution

Inst. for Phys. of microstructures, RAS, Nizhny Novgorod

Volume

44

Issue

10

fYear

2008

Firstpage

2296

Lastpage

2298

Abstract

We report the results of magnetic force microscopy (MFM) investigations of low-coercivity Co nanodiscs, with 50 nm lateral size and 20 nm height, fabricated by e-beam lithography and ion etching. We observed two types of MFM contrast in the form of Gaussian and ring distributions caused by strong probe-particle interaction. We compared experimentally the transformation of the MFM contrast from these low-coercivity nanodiscs caused by an external magnetic field applied in situ, and compared the experimental results with theoretical simulations.

Keywords

cobalt; coercive force; discs (structures); magnetic force microscopy; nanolithography; nanostructured materials; sputter etching; Co; Gaussian distribution; e-beam lithography; ion etching; low coercivity ferromagnetic nanodiscs; low-coercivity cobalt nanodiscs; magnetic force microscopy; probe-particle interaction; ring distribution; size 20 nm; size 50 nm; Low-coercivity magnetic nanodiscs; magnetic force microscopy; tip-sample interaction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2008.2000811

Filename

4629406