Structural and magnetic properties of nanograined Ni0.7−yZn0.3CayFe2O4 spinelsMahmoud Hosseny Makled, Nabil M. Shash and Hesham K. AbdelsalamEur. Phys. J. Appl. Phys., 66 3 (2014) 30402DOI: https://doi.org/10.1051/epjap/2014130573
