Prof Jose A. De Toro leads the Applied Nanomagnetism (ApNano) Group since its creation a decade ago at the IRICA Institute in Universidad de Castilla-La Mancha, with current, mainly fundamental, interest in dense systems of magnetic nanoparticles and nanocomposites. He has been a postdoc Marie Curie fellow at the University of Liverpool, and Visiting Professor at Cagliari, USF-Tampa, CNRS-Strasbourg and Sydney. Prof. De Toro has given invited talks at ICFPM, APS and ACS conferences, among others, and chaired several symposia on nanoparticles and critical raw materials. His main research lines have been: (a) exchange bias (in both chemically uniform and core/shell structured particles), and (b) magnetism of dense particle systems prepared either by gas-phase or chemical synthesis. Recent highlights include the demonstration of simultaneous individual and collective properties in particle systems, the prediction of “supermagnetostriction” in self-assembled nanocube systems, insight into the role of local anisotropy in collective magnetism, or the finding of non-exchange bias in soft/hard binary particle systems.