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arXiv · 1009.2395

Micromagnetic simulations of interacting dipoles on a fcc lattice: Application to nanoparticle assemblies

M L Plumer·J van Lierop·B W Southern·J P Whitehead
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Abstract

Micromagnetic simulations are used to examine the effects of cubic and axial anisotropy, magnetostatic interactions and temperature on M-H loops for a collection of magnetic dipoles on fcc and sc lattices. We employ a simple model of interacting dipoles that represent single-domain particles in an attempt to explain recent experimental data on ordered arrays of magnetoferritin nanoparticles that demonstrate the crucial role of interactions between particles in a fcc lattice. Significant agreement between the simulation and experimental results is achieved, and the impact of intra-particle degrees of freedom and surface effects on thermal fluctuations are investigated.

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M L Plumer, J van Lierop, B W Southern, J P Whitehead. 2010-09-13. Micromagnetic simulations of interacting dipoles on a fcc lattice: Application to nanoparticle assemblies. https://doi.org/10.1088/0953-8984%2F22%2F29%2F296007

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