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Nanostructured composite materials of cerium oxide and barium cerate
Authors:D. A. Medvedev  E. Yu. Pikalova  A. K. Demin  V. R. Khrustov  I. V. Nikolaenko  A. V. Nikonov  V. B. Malkov  B. D. Antonov
Affiliation:1. Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia
2. Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia
3. Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia
Abstract:Nanosized powders with a composition of (1-x)Ce0.8Sm0.2O2-δ-xBace0.8Sm0.2O3-δ (x = 0, 0.3, and 1) were obtained by self-ignition combustion synthesis (SICS) from the appropriate nitrates and various organic fuels (glycine, glycerol, citric acid, and a mixture of citric acid and ethylene glycol). The most finely dispersed powders formed when the concentration of the perovskite phase in the system decreased or when glycerol or citric acid-enthyleneglycol mixture was used as a fuel during SICS. A procedure for the preparation of powders and nanostructured ceramics was developed and their electric properties were studied.
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