Magnetic study of Fe3O4/Ag nanoparticles Janusz Typek, Nikos Guskos, Grzegorz Zolnierkiewicz, Zofia Lendzion-Bielun, Anna Pachla and Urszula Narkiewicz Eur. Phys. J. Appl. Phys., 83 1 (2018) 10402 Published online: 18 October 2018 DOI: 10.1051/epjap/2018170366