The O diffusivity was deduced from emf measurements performed on solid electrolytic cells at 873 to 1373K. The O diffusivity in a sample containing 0.6at%O was described by the parameters: ln[Do(m2/s)] = -14.19 and E = 113kJ/mol.

J.S.Lee, C.J.Altstetter: Acta Metallurgica, 1986, 34[1], 131-8