Magnetic Force Microscope Contrast Simulation for Low-Coercive Ferromagnetic and Superparamagnetic Nanoparticles in an External Magnetic Field

Author

Mironov, Victor L. ; Nikitushkin, Dmitry S. ; Bins, Chris ; Shubin, Andrey B. ; Zhdan, Peter A.

Author_Institution

Russian Acad. of Sci., Nizhny Novgorod

Volume

43

Issue

11

fYear

2007

Firstpage

3961

Lastpage

3963

Abstract

We report the results of simulations of magnetic force microscope (MFM) contrast for low-coercive ferromagnetic and superparamagnetic nanoparticles. We show that two types of MFM contrast in the form of gaussian and ring distributions can be observed because of probe-particle interaction. We discuss stabilization of the magnetic moment of nanoparticles by an external magnetic field. We have calculated the values of stabilizing magnetic fields and their dependence on probe parameters and scanning heights.

Keywords

coercive force; ferromagnetic materials; magnetic force microscopy; magnetic moments; magnetic particles; nanoparticles; paramagnetic materials; superparamagnetism; low-coercive ferromagnetic nanoparticles; magnetic force microscope contrast simulation; magnetic moment; probe-particle interaction; superparamagnetic nanoparticles; Computer simulation; Magnetic fields; Magnetic force microscopy; Magnetic forces; Magnetic materials; Magnetic moments; Nanoparticles; Physics; Probes; Saturation magnetization; Low-coercive magnetic nanoparticles; magnetic force microscopy; superparamagnetic particles;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.903300

Filename

4352039