Reliable evaluation of magnetic properties of nanoparticle systems

We obtain magnetic properties of magnesioferrite nanoparticles grew in a magnesiowstite crystalline matrix by analyzing the temperature dependence of the coercive field and the magnetization behavior. We introduce a modelling scheme to evaluate those properties in which the input variables are estimated from experimental data. The core of the method relies in sampling for nearby values in order to reach the optimal one that yields the smallest difference between calculated and experimental data. This procedure is efficient and our results match with the ones found in the literature. Thus, our method paves the way for a robust characterization of superparamagnetic nanoparticle materials. (C) 2015 AIP Publishing LLC.