The diffusion of 18O along the c-axis of single crystals was measured directly using proton activation analysis via the 18O(p,α)15N reaction (table 1). The data for 940 to 1141C could be described by:

D (cm2/s) = 1.2 x 10-10exp[-29.6(kcal/mol)/RT]

Application of a Nondestructive Single-Spectrum Proton Activation Technique to Study Oxygen Diffusion in Zinc Oxide. Robin, R., Cooper, A.R., Heuer, A.H.: Journal of Applied Physics, 1973, 44[8], 3770-7

 

Table 1

Self-diffusion (c-axis) of 18O in ZnO single crystals

TempeTempearture (C))

D(cm2/s)/s)

1141

3.2 x 10-15

1095

2.3 x 10-15

1038

1.3 x 10-15

950

6.4 x 10-16

940

4.9 x 10-16

 

Table 2

Diffusion data for 57Co in ZnO

Temperature (C)

D(m2/s)

660

7.50 x 10-20

700

1.85 x 10-19

770

3.90 x 10-18

815

2.60 x 10-18

875

4.70 x 10-17

920

1.30 x 10-16

950

5.35 x 10-16