Hysteresis in a magnetic bead and its applications
Soft Condensed Matter
2012-08-28 v1 Statistical Mechanics
Abstract
We study hysteresis in a micron-sized bead: a non-magnetic matrix embedded with super- paramagnetic nanoparticles. These hold tremendous promise in therapeutic applications as heat generating machines. The theoretical formulation uses a mean-field theory to account for dipolar interactions between the supermoments. The study enables manipulation of heat dissipation by a compatible selection of commercially available beads and the frequency f and amplitude ho of the applied oscillating field in the labortory. We also introduce the possibility of utilizing return point memory for gradual heating of a local region.
Keywords
Cite
@article{arxiv.1208.5347,
title = {Hysteresis in a magnetic bead and its applications},
author = {Vanchna Singh and Varsha Banerjee},
journal= {arXiv preprint arXiv:1208.5347},
year = {2012}
}
Comments
8 pages, 4 figures