Magnetic properties of Sn-substituted Ni–Zn ferrites synthesized from nano-sized powders of NiO, ZnO, Fe2O3, and SnO2
Ali MA1, Uddin MM1, †, Khan MNI2, Chowdhury FUZ1, Hoque SM2, Liba SI2
       

(color online) (a) The MH loops of the NZSFO ferrite samples, (b) magnification of the upper saturated part of the MH loops.