La+3 effectiveness replacement on the ferrite material (Cu_0,2Zn_0,45La_xFe_2-xO₄) On the structural and electrical and magnetic features

Nano ferrite with chemical formula (Ni_0.35Cu_0.2Zn_0.45La_xFe_2-xO₄), were chemically collected utilizing sol-gel auto – combustion procedure for the values of (X=0.0, 0.025, 0.05 and 0.075). The prepared samples were calcined at (900°C) for (2h), the formation of ferrite was assured using (XRD) and (SEM) techniques. X-ray diffractometer result shows that ferrite have spinal cubic phase with a particle size ranging from (22-29 nm),the Lattice constant and density (ρx-ray) increased with La+3content while the porosity was noticed to decrease. And have been studied dielectric properties It was also observed that the value of the dielectric constant and the dielectric loss factor decreased by increasing the frequency. The increase in alternating conductivity (σa.c) was also observed with increasing frequency.