A nanostructure of Lithium-Zinc-Copper ferrite (LiZnCu-Ferrite) prepared experimentally by the auto-combustion method depends on different parameters. The auto-combustion method was operated at temperature (160 °C), which is suitable to prepare the required nanostructure ferrite phase. The dependent composition was [Li_0.5-xZn_xCu_xFe_2.5-xO₄ at (x=0, 0.05, 0.15, 0.25, 0.35, and 0.45)]. A pre-firing at temperature (650 °C) was applied during the calcination process that was suitable to remove unwanted products. The sintering at temperature (800 °C) was suitable for a pelletized shape of ferrite samples. The X-ray diffraction (XRD) pattern showed a spinel structure of ferrite phase produced for all samples under study with the lattice constant in the range (8.345-8.368 Å) as a function of different (x). The crystallite size was in the range (18.41-30.27 nm) calculated by the Scherrer method. The transmission electron microscope (TEM) showed a production of nanorod in the size range (10-45 nm), and nanoparticles in the size range (10-40 nm). There is a coincidence between the results of XRD and TEM analysis. On the other hand, the scanning electron microscope (SEM) showed the surface morphology and the nature of grain size, which is a sign on the presence of nanostructure. It was agreed with the XRD analysis prepared in ferromagnetic materials.

Keywords: Auto-combustion method, Spinel structure, Nanostructure ferrites, Scherrer method.