Computer simulation of switching in Stoner-Wohlfarth colloids

Author

Günal, Y. ; Visscher, P.B.

Author_Institution

Dept. of Phys. & Astron., Alabama Univ., Tuscaloosa, AL, USA

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3070

Lastpage

3072

Abstract

We have developed a method for the inclusion of transverse magnetization into a computer simulation of a magnetic ink, a colloidal suspension of acicular particles. Previous simulations have assumed a fixed longitudinal magnetic moment. We determine the magnetization (assumed uniform) by minimizing the Stoner-Wohlfarth energy, so the moment can point in any direction relative to the particle axis. The particle-magnetization changes and particle rotations occurring during a hysteresis loop will be shown in the form of a video. This method can be used to simulate particle orientation during the magnetic-tape coating process

Keywords

magnetic fluids; magnetic hysteresis; magnetic switching; magnetisation; Stoner-Wohlfarth energy; acicular particles; colloidal suspension; computer simulation; hysteresis loop; magnetic ink; magnetic tape coating; particle magnetization; particle orientation; particle rotation; switching; transverse magnetization; video; Astronomy; Coatings; Computational modeling; Computer simulation; Ink; Magnetic fields; Magnetic forces; Magnetic hysteresis; Magnetic levitation; Magnetic moments; Magnetic separation; Magnetization; Physics; Polymer films; Saturation magnetization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617847

Filename

617847