Identification of dielectric and magnetic properties of core shell ZnTiO3/CoFe2O4nanocomposites

Electromagnetic core shell nanocomposites (1 - x) ZnTiO3/(x) CoFe(2)O(4)were prepared successfully through sol-gel procedures, where (x similar to 0, 5, 10 and 15 wt%). The end product powders were identified through XRD, SEM, and TEM. The XRD results prove the presence of ZnTiO(3)and CoFe2O4, while the SEM graph confirms the core-shell nanostructure. The dielectric properties such as dielectric constant (epsilon '), loss tangent tan(delta), dielectric modulusM ' andM '', and ac conductivity (sigma) are measured in the frequency range 0.1-10(7) Hz. The dielectric properties show a dependence behavior on the variation of CoFe(2)O(4)content in the core-shell composite. CoFe2O4@ZnTiO(3)nanocomposites manifest striking enhancement on dielectric properties compared to ZnTiO3. The dielectric permittivity (e ') increases from 204 to 415 at low frequency with increasing the CFO content from zero to 15 wt%. The Loss tangent tan (delta) of the electromagnetic nanocomposite has a very tiny value of 3.8 x 10(-3)in the high-frequency range proving a very high-quality factor (Q = nu x 1/tan (delta) similar to 2 x 10(9)at 10(7) Hz.M" shows a peak that differentiates between the long-range hopping and the localized motion of the charge carriers. The conductivity of the electromagnetic composite is released from hopping charge carriers over the whole frequency range compared to CoFe2O4. The improvement of the micro capacitor due to the interfacial polarization enhances the dielectric characterization of CoFe2O4@ZnTiO3. The electromagnetic samples show a presence of magnetic order, in which the saturation magnetization of the electromagnetic samples increases from 0.113 to 9.35 emu/g with increasing CoFe(2)O(4)concentration from 5 to 15 wt%.