This article presents the annealing effect on the structural, elastic, thermodynamic, optical, magnetic, and electric properties of Ni _0.6 Zn _0.4 Fe _1.5 Al _0.5 O ₄ (NZFAO) nanoparticles (NPs).

A complex impedance spectrum for La _0.6 Gd _0.1 Sr _0.3 Mn _0.75 Si _0.25 O ₃ sample at different temperatures with electrical equivalent circuit.

This study presents the electrical properties, complex impedance analysis and dielectrical behavior of La_0.5Ca_0.5−xAg_xMnO₃ manganites.

This work is devoted to the synthesis and study of the different properties of ZnO nanoparticles (NPs) doped with the Ni element. We have used a simple co-precipitation technique for the synthesis of our samples and various structural, morphological and optical techniques for their analysis. Energy-Dispersive X-ray spectroscopy (EDX) confirms the stoichiometry of the samples. The X-Ray Diffraction (XRD) patterns reveal the hexagonal wurtzite phase of polycrystalline ZnO with a P63mc space group. Debye Scherrer and Williamson–Hall methods show that the average size of crystallites is around 40 nm. Transmission electron microscopy (TEM) images confirm the XRD results. The optical spectrum of Zn_0.95Ni_0.5O shows the presence of near-band-edge (NBE) ultraviolet emission. The absorption defect bands appearing near the blue–green region and near infrared emission are attributed to the Ni²⁺ intra-3d luminescence. The electronic structure of the Ni²⁺ doped ZnO NPs confirms the T_d site symmetry of Ni²⁺ in the ZnO host crystal and leads to a perfect correlation between calculated and experimental energy levels.