Monte Carlo simulation of magnetic multi-core nanoparticles
Journal article, 2009

In this paper, a Monte Carlo simulation is carried out to evaluate the equilibrium magnetization of magnetic multi-core nanoparticles in a liquid and subjected to a static magnetic field. The particles contain a magnetic multi-core consisting of a cluster of magnetic single-domains of magnetite. We show that the magnetization of multi-core nanoparticles cannot be fully described by a Langevin model. Inter-domain dipolar interactions and domain magnetic anisotropy contribute to decrease the magnetization of the particles, whereas the single-domain size distribution yields an increase in magnetization. Also, we show that the interactions affect the effective magnetic moment of the multicore nanoparticles.

Magnetic dipolar interaction

Monte Carlo simulation

Magnetic anisotropy

Magnetic multi-core nanoparticle

Magnetization

Metropolis algorithm

Author

Vincent Schaller

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Göran Wahnström

Chalmers, Applied Physics, Materials and Surface Theory

Anke Sanz-Velasco

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Peter Enoksson

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Christer Johansson

Journal of Magnetism and Magnetic Materials

0304-8853 (ISSN)

Vol. 321 10 1400-1403

Areas of Advance

Nanoscience and Nanotechnology

Production

Life Science Engineering

Subject Categories

Other Physics Topics

Condensed Matter Physics

DOI

10.1016/j.jmmm.2009.02.047

More information

Created

10/7/2017