Applications of exchange coupled bi-magnetic hard/soft and soft/hard magnetic core/shell nanoparticles

arXiv:1406.3966The applications of exchange coupled bi-magnetic hard/soft and soft/hard ferromagnetic core/shell nanoparticles are reviewed. After a brief description of the main synthesis approaches and the core/shell structural-morphological characterization, the basic static and dynamic magnetic properties are presented. Five different types of prospective applications, based on diverse patents and research articles, are described: permanent magnets, recording media, microwave absorption, biomedical applications and other applications. Both the advantages of the core/shell morphology and some of the remaining challenges are discussed.This work has been supported by the MAT2010-20616-C02 and MAT2013-48628-R projects of the Spanish Ministerio de Economía y Competitividad (MINECO) and by the 2014-SGR-1015 project of the Generalitat de Catalunya. M. Estrader wants to thank the Spanish MINECO for a Juan de la Cierva post-doctoral fellowship. A.G. Roca would like to thank Generalitat de Catalunya for financial support under the Beatriu de Pinos fellowship program (2011 BP_B 00209). ICN2 acknowledges support from the Severo Ochoa Program of the Spanish MINECO.Peer Reviewe