Abstract
We use Monte Carlo methods to simulate the influence of Brownian rotation on the magnetic properties of a system of single-domain magnetic nanoparticles with cubic and uniaxial magnetic anisotropies. The distinguishing feature of the system is a strongly temperature-dependent viscosity. Such a system has been realized experimentally using magnetic nanoparticles suspended in a freeze-concentrated cryoprotectant solution.
Highlights
We consider a set of N non-interacting single-domain magnetic nanoparticles
The volume Vi of the ith particle is selected from a log-normal distribution
The magnetic moment of the ith particle is written as μi = μiSi, where Si is a unit vector, | Si|= 1, and μi = msVi, with ms the particle magnetization
Summary
We consider a set of N non-interacting single-domain magnetic nanoparticles. We adopt the following effective energy model [3, 6, 7].
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