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) The frequency dependence of permeability of the NZSFO with different Sn concentrations: (a) real part, (b) imaginary part.