This ceramic was shown to exhibit O ion conductivities which were of the order of 10S/m at 1043K. The conductivity was attributed to the formation of a matrix distributed structure, due to partial thermal decomposition.
V.V.Belousov: Elektrokhimiya, 1995, 31[12], 1343-7 (Russian Journal of Electrochemistry, 1995, 31[12], 1240-4)