Radioactive tracer methods were used to study diffusion in polycrystalline samples. It was found that the results between 1000 and 1200C could be described by

D(cm2/s) = 1.5 x 100exp[-3.17(eV)/kT]

V.P.Prutkin, A.S.Lyutovich, M.J.Kardzhaubaev: Krist. Tonkikh Plenok, 1970, 139-45

 

 

Table 82

Diffusion of P in Single Crystals

 

Temperature (C)

Surface Concentration (/cm3)

D (cm2/s)

1000

3.5 x 1019

1.2 x 10-13

1050

4.0 x 1019

2.4 x 10-13

1140

2.0 x 1019

6.5 x 10-13

1200

5.0 x 1019

2.2 x 10-12