Effect of volume distribution broadenig in properties of NPs

Magnetic properties of nanoparticle compacts with controlled broadening of the particle size distribution.

M. S. Andersson, R. Mathieu, P. S. Normile, S. S. Lee, G. Singh, P. Nordblad, and J. A. De Toro

Phys. Rev. B 95, 184431 (2017)

(a) Low-field (800 A/m) ZFC/FC M/H vs $T$ curves for MIX0 and a diluted sample from the same nanoparticle batch (reference MIX0). M/H values are normalized to the maximum of their ZFC M/H curves. (b) In-phase (${\chi }^{\prime }$) and (c) out-of-phase (${\chi }^{\text{'}\text{'}}$) components of the ac susceptibility as a function of the temperature ($f=10$ Hz) for selected compacts as in the legend in (c). Inset in (b): Temperature of the maximum of the in-phase susceptibility ($T_{\max }$) as a function of the concentration of 11.5-nm particles.