Accurate oxygen-content analysis by means of a coulometric redox titration

method specially devised for the purpose showed that as-synthesized (in 5% H2/Ar)

samples of the recently reported novel solid oxide fuel cells anode material

Sr2MgMoO6−δ contain oxygen vacancies with a concentration of δ≈0.05. Oxygen

contents and the resultant Mo-valence values were also analyzed for various

A2MgMoO6−δ samples in order to reveal both the isovalent and aliovalent A-site

cation substitution effects.

Oxygen-Vacancy Concentration in A2MgMoO6−δ Double-Perovskite Oxides.

Y.Matsuda, M.Karppinen, Y.Yamazaki, H.Yamauchi: Journal of Solid State

Chemistry, 2009, 182[7], 1713-6