Magnetic properties of dense nanoparticle arrays with core/shell morphology

Details Magnetic properties of dense nanoparticle arrays with core/shell morphology Magnetic properties of dense nanoparticle arrays with core/shell morphology

2006-07-03

arxiv.org/abs/cond-mat/0607038v1

J. Magn. Magn. Mater. 316(2) e291-e294 (2007)

Physics

Condensed Matter

Materials Science

3 pages, 2 figures; Presented at JEMS '06, San-Sebastian, Spain

Scientific paper

10.1016/j.jmmm.2007.02.122

We calculate the magnetization hysteresis for an ordered array of composite magnetic nanoparticles with a ferromagnetic (FM) core and an antiferromagnetic (AFM) shell, located on a triangular lattice and coupled via magnetostatic forces. Each nanoparticle is described by a pair of exchange-coupled (J), anisotropic spins (Meiklejohn-Bean model). The magnetization hysteresis loop is obtained using the Metropolis Monte Carlo algorithm. For magnetically hard nanoparticles we find that the coercivity is reduced with increasing the dipolar coupling strength, while the exchange bias field shows an non-monotonous behavior resulting from the competition between the random anisotropy and interparticle dipolar interactions. The possibility of enhancing the exchange bias field by increasing the packing density is discussed.

Affiliated with

Also associated with

No associations

Rating

Magnetic properties of dense nanoparticle arrays with core/shell morphology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Magnetic properties of dense nanoparticle arrays with core/shell morphology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic properties of dense nanoparticle arrays with core/shell morphology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-415990