The dielectric and conductivity properties of polymeric spinel (Ni0.5Zn0.4Cu0.1Fe2O4)X(CoFe2O4)3-X ferrite nanocomposites

Material design in nanoscale has given a great inspiration to magnetism like most of area of science and technology. Recently, materials which became more effective by designing in nanoscale, have been widely used in daily life.Magnetic properties of polymeric ferrit nanocomposites are frequently investigated. However, in this study, the dielectric properties of a polymeric nanocomposite which include NiZnCuFe2O4 and CoFe2O4 in variable ratios, have been investigated. Measurements have been performed in the frequency range 1 Hz ? 1 MHz and in the temperature range 230 K ? 410 K. Due to the obtained results, the relaxation model of the samples have been defined as an equation which is Cole Cole model plus conductivity term. To explain the conductivity mechanism of the series the QMT model has been proposed.