Magnetic and electrical properties of yttrium substituted manganese ferrite nanoparticles prepared via micro-emulsion route

Polycrystalline oxide YxMnFe2-xO4 was prepared via low-cost micro emulsion method. As concentration of yttrium ions increased, their electrical and magnetic properties were changed. Effect of secondary phase YFeO3 on the electrical and magnetic properties of the material were also studied and discussed in detail. As concentration of impurity ions increased, variation in resistivity was observed. This variation also affected the magnetic behavior of the prepared Mn-based spinel ferrites. Various parameters such as the saturation magnetization (Ms), retentivety (Mr), coercivity (Hc), anisotropic constant (k(1)), magnetic moments (mu(B)) have been calculated from recorded M-H loops of all unsubstituted and substituted MnFe2O4 nanoparticles. Ms and Mr values found in the range 27-50 emu/g and 1.8-7.6 emu/g respectively.