Abstract
Solid solutions of the general formula Ce1−xLnxO2−x/2□x/2 (Ln = lanthanide (III) and □ = anion vacancy), were prepared by a novel sol-gel route. These materials were characterized by powder diffraction and scanning electron microscopy. The gels formed on sol evaporation were found to be solid solutions with the fluorite structure and a crystallite size of approximately 6 nm. This is the lowest temperature of formation to date. The gels densified readily at 700 °C and the lattice parameter of these materials was found to be directly proportional to the ionic radius of the dopant.
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Bhattacharya, A.K., Hartridge, A., Mallick, K.K. et al. Low-temperature synthesis and characterization of ceria-based oxide ion conductors. JOURNAL OF MATERIALS SCIENCE 31, 5005–5007 (1996). https://doi.org/10.1007/BF00355898
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DOI: https://doi.org/10.1007/BF00355898