Metal oxides for electronics and the SPQEO journal

This article discusses the main trends in the physics and preparation of metal oxides and summarizes the results of research published by SPQEO in this area over the past decade. The main metal oxides studied include ZnO, Zn1-xCdxO, Zn1-xCoxO, MgxZn1–xO, ZnO:Mn, VO2, ZrO2–Y2O3, TiO2, WO3, Gd2O3, Er2O3, WO3–CaO–SiO2–B2O3: Tb3+, Dy2O3, NiO, FexOy, Ga2O3, Al2O3, ITO, Ag2O and graphene oxide. These oxides were obtained by the following methods: sintering in air or in a stream of various gases, magnetron sputtering, atomic layer deposition, explosive evaporation, sol-gel, spin coating, spray pyrolysis, rapid thermal annealing, green synthesis from plant solutions, melt quenching, rapid thermal annealing, self-ignition, ion-plasma co-sputtering, vacuum sputtering, reactive ion beam sputtering, and the Hammer method. The electrical and optical properties of the studied oxides are illustrated.