Applications of exchange coupled bi-magnetic hard/soft and soft/hard   magnetic core/shell nanoparticles
  The 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 perspective 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. 
A. L\'opez-Ortega, M. Estrader, G. Salazar-Alvarez, A.G. Roca, J.   Nogu\'es
cond-mat.mtrl-sci