A systematic investigation was made of transport in oxide solid solutions at 1200C. The diffusion of the tracer, 59Fe, in (Co,Fe)1-xO was measured at various O activities. The O activity dependences of the tracer diffusion coefficients (tables 45 and 46) were analyzed.

S.Tinkler, R.Subramanian, R.Dieckmann: Journal of the Physics and Chemistry of Solids, 1994, 55[3], 273-86

Table 42

Diffusivity of Mn in (CoxFezMn2z)3-δO4 at 1200C

 

log10[O2 activity]

x

log10[D (cm2/s)]

-0.67

0

-9.14

-0.67

0.1

-9.67

-0.67

0.2

-10.06

-0.97

0.333

-9.89