Oxide Solid Solutions and its Internal Reduction Reactions

In analogy to the internal oxidation of oxide solid solutions, the internal reduction of oxide solid solutions is investigated. The kinetics of internal reactions are formally analyzed, and it is shown experimentally that these reactions in the reduction mode do occur as predicted. In the case of internal reduction of transition metal oxide solid solutions of the type (A, B) O, often fast diffusion paths determine the evolution of the reaction morphology.