The tracer diffusivity of Zn in polycrystalline samples was studied at between 600 and 950C, under an O partial pressure of 1atm, by using serial sectioning or secondary ion mass spectrometry methods. It was found that the present results (table 63) fell upon the same Arrhenius curve,

D (cm2/s) = 2 x 100 exp[-247(kJ/mol)/RT]

as did previous data.

Tracer Diffusion of Oxygen in YBa2Cu3O7-δ. J.L.Routbort, S.J.Rothman, N.Chen, J.N.Mundy, J.E.Baker: Physical Review B, 1991, 43[7], 5489-97