In this study, Ni-Cu-Zn ferrites with the chemical composition of Ni 0.5 Cu x Zn 1-x Fe 2 O 4 (where x= 0, 0.1, 0.2, 0.3, 0.4, 0.5) were synthesized by glycine nitrate process using glycine as a fuel and nitrate as an oxidizer. Thermo gravity analysis (TGA), X-ray diffraction (XRD), scanning electron microscope (SEM), vibrating sample magnetometer (VSM), LCR-Meter methods were employed for characterization of thermal analysis, microstructure analysis, magnetic, electromagnetic and dielectric properties, respectively. Qualitative and quantitative phase analysis, structural parameter beside cation distribution were done by Panalytical X'pert Highscore Plus, Crystal Impact Match, Material Studio, and MATLAB as well as OriginPro Softwares, respectively. Due to heat treatment, non-Spinel phases were disappeared. To find out the optimize temperature, Ni 0.5 Zn 0.5 Fe 2 O 4 powders were calcined at different temperatures. The as-received powders calcined at 1000 ?C for 2 hours and cooled down in furnace. The calcined powders were characterized by X-ray diffraction technique. It was revealed that the combustion reaction was extremely exothermic and occurred between 220 to 227 ?C. Characteristics of as-synthesized powders by X-ray diffraction technique gave evidence to the presence of Zinc Oxide, Iron Oxide, Ni, and other impurity along with spinel structure. The least impurity level belonged to Ni 0.5 Cu 0.2 Zn 0.3 Fe 2 O 4 More specifically, it consisted 12.1 wt. % Ni. clusters containing numerous pores associated with large amount of gases released during the combustion synthesis. In the meantime, clusters were 20 to 40 nm large. X-ray diffraction patterns revealed that Ni-Cu-Zn ferrite powders with spinel structure were been successfully formed in each specimen. Saturation magnetization and permeability increased by the increasing of copper content up to x=0.1 and then decreased. On the other hand, coercivity constantly increased as Cu content increased. Dielectric pattern was indicative of reduction in dielectric constant as well. The single semi-circle in Nyquist curve was appeared as a result of grain boundary effect. Contrary to this, semi-circle for the effect of grain was not observed due to the difference between dielectric behavior of grain and grain boundary. Keywords Glycine nitrate auto combustion process, Ni-Cu-Zn ferrite, Nanocrystalline, magnetic properties
