“…In this work, we describe the preparation of a flexible, transparent and magnetic multiscale composite and its magnetic and magneto-optical activity, particularly the Faraday effect, in the range of 1.0-4.5 eV. The methodology relies on the possibility of embedding metallic magnetic nanoparticles inside sepiolite (Esteban-Cubillo et al, 2010;EstebanCubillo et al, 2008;Pecharroman et al, 2006) thus preserving them from agglomeration and corrosion. It is also feasible to disperse sepiolite bearing metallic nanoparticles into an ad-hoc polymeric matrix and to produce materials behaving in all as plastics (light, tough, easy to process, transparent) while displaying specific properties endowed by the metallic nanoparticle.…”