Article,
Magnetic properties of crystalline nanoparticles with different sizes and shapes
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, (2017)
DOI: 10.1016/j.jmmm.2016.10.124
Abstract
The effects of shape and finite size on the physical behavior of
nanostructured antiferromagnetic particles are investigated. They were
modeled as ellipsoidal systems which preserve the crystalline structure
of the correspondent bulk material. In our analysis we consider
nanoparticles composed by magnetic ions which are themselves insensitive
to the presence of surfaces and/or interfaces. Results are shown for
structures similar to MnF2 and NiO crystals. Special attention is given
to these last once their singular magnetic arrangement, as well as,
their use at different technological and/or biomedical applications, has
motivated intense experimental studies at different laboratories. We use
the parameters that describe the correspondent bulk material to discuss
the magnetic behavior of these particles for different volumes and
shapes.
