The permeability of O in [(ZrO2)1-x(CeO2)x]0.9(MgO)0.1, where x ranged from 0.1 to 0.6, was measured at temperatures of between 1100 and 1750K under O partial pressures of 0.0001 to 0.2atm. At temperatures ranging from 1100 to 1500K, the normalized permeability increased exponentially for x-values of less than 0.4. At temperatures ranging from 1500 to 1750K, the normalized permeability increased exponentially for x-values below 0.4 while, at higher x-values, it tended to saturate. At 1100 to 1280K, the value for x = 0.6 was a little higher than that for x = 0.5. At 1280 to 1750K, the value for x = 0.6 was a little lower than that for x = 0.5.

Y.Nigara, Y.Kosaka, K.Kawamura, J.Mizusaki, M.Ishigame: Solid State Ionics, 1996, 86-88[2], 739-44