Computer simulation of the orientation dynamics of a 2D array of fine magnetic particles in an opposed-poles orientation magnet

The orientation dynamics of a 2D assemblage of interacting acicular particles in an opposed-poles arrangement has been modelled, and is aimed at establishing general principles which will be investigated further by a 3D molecular dynamics model. The equations of motion of the system are represented...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 1996-03, Vol.155 (1), p.117-119
Main Authors: Warren, A.P., Hobby, P.C., Coverdale, G.N., Chantrell, R.W., Gilson, R.G., Thomas, J.W.
Format: Article
Language:English
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Summary:The orientation dynamics of a 2D assemblage of interacting acicular particles in an opposed-poles arrangement has been modelled, and is aimed at establishing general principles which will be investigated further by a 3D molecular dynamics model. The equations of motion of the system are represented by a set of three first-order ODEs, where a net torque expression and the infinitely-damped form of the Landau-Lifschitz equation are used to model the particle and moment dynamics, respectively. The resinous vehicle is treated (to a first approximation) as a homogeneous, isotropic Newtonian fluid. This initial study shows the importance of pre-orientation due to mechanical shear during coating.
ISSN:0304-8853
DOI:10.1016/0304-8853(95)00720-2