Semiconductor ionic electrolytes, especially heterostructure composites, have a significant role in enhancing oxide ion conductivity and peak power density (PPD) because of their interfacial contact. In this work, the fluorite structure CeO2 spinel-based CoAl2O4 samples, as composite electrolyte, are successfully fabricated. The p-type n-type (CeO2-CoAl2O4) used an electrolyte exhibits cell per...

Blue nano pigments of CoAl2O4 were successfully prepared by polyol method. Two different groups of materials containing chloride and acetate compounds were used to synthesis the nano pigments. The nano pigments were calcinated at 1100 °C. The CoAl2O4 nano pigments were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), dynamic li...

Cobalt blue pigments, which mainly comprise CoAl2O4, are widely synthesized as nano-scale particles using the coprecipitation method. Such ultrafine powders necessary for ceramics industry because of their significant effect on color glaze and bulk tiles. In this paper, cobalt pigments have been prepared method then subjected to supercritical fluid drying. The differences in physicochemical opt...

CoAl2O4 spinel ceramics were prepared via a standard solid-state reaction method, and their crystal structure, microwave dielectric properties, resonant antenna applications systematically investigated in this study. X-Ray diffraction patterns Raman spectra confirmed that belongs to the Fd-3 m space group with cubic symmetry. εr Qf values increased increasing sintering temperature, where an eve...