Molecular dynamics simulations of the dipolar-induced formation of magnetic nanochains and nanorings

Details Molecular dynamics simulations of the dipolar-induced formation of magnetic nanochains and nanorings Molecular dynamics simulations of the dipolar-induced formation of magnetic nanochains and nanorings

2007-06-27

arxiv.org/abs/0706.3920v1

EPL 77, 57003 (2007)

Physics

Condensed Matter

Materials Science

6 pages, 6 figures

Scientific paper

10.1209/0295-5075/77/57003

Iron, cobalt and nickel nanoparticles, grown in the gas phase, are known to arrange in chains and bracelet-like rings due to the long-range dipolar interaction between the ferromagnetic (or super-paramagnetic) particles. We investigate the dynamics and thermodynamics of such magnetic dipolar nanoparticles for low densities using molecular dynamics simulations and analyze the influence of temperature and external magnetic fields on two- and three-dimensional systems. The obtained phase diagrams can be understood by using simple energetic arguments.

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