Six polycrystalline ceramic samples of Zn1− xCoxO (x= 0, 0.02, 0.05, 0.1, 0.2, and 0.3)
prepared by conventional solid-state reaction have been studied the structural
characterization, and optical and magnetic properties at room-temperature. Analyses of x-
ray diffraction (XRD) patterns indicated the substitution of Co2+ for Zn2+ in the ZnO-wurtzite
structure, and the presence of a secondary phase of ZnCo2O4 spinel. These factors directly
influenced the features of Raman spectra of the samples in both the cases of non-resonant …