The synthesis, and structural and microstructural characterization of Sr1.5Sb0.5O3−y

(y ~ 0.25) was described. The material had a cubic, double-perovskite structure,

and a large concentration of oxygen vacancies with no apparent long-range order.

High-resolution electron microscopy indicated that short-range ordering

phenomena could occur. The electrical conductivity was independent of the oxygen

partial pressure for PO2<10−1.25atm, and was typical of ionic transport (σ ~ 10−4S/cm

at 600C), whereas the conductivity was dominated by p-type charge carriers at

higher PO2.

Synthesis, Characterization and Ionic Conductivity of Sr1.5Sb0.5O3−y (y~0.25).

E.Chinarro, G.C.Mather, A.Caballero, M.Saidi, E.Morán: Solid State Sciences,

2008, 10[5], 645-50