Magnetoabsorption and magnetic hysteresis in Ni ferrite nanoparticles P. Hernández-Gómez, J. M. Muñoz, M. A. Valente, C. Torres and C. de Francisco EPJ Web of Conferences, 40 (2013) 17003 Published online: 14 January 2013 DOI: 10.1051/epjconf/20134017003