Influence of the spatial confinement at nanoscale on the structural surface charging in magnetic nanocolloidsA. F. C. Campos, R. Aquino, F. A. Tourinho, F. L. O. Paula and J. DepeyrotEur. Phys. J. E, 36 4 (2013) 42DOI: https://doi.org/10.1140/epje/i2013-13042-y