Diffusion experiments were carried out in a 2-zone furnace, using neutron-activated elemental As as the source. Sectioning was carried out by using an anodizing and stripping technique, and the activity of 76As was measured by using liquid scintillation methods. At 950 to 1050C, the intrinsic diffusivity in the lattice could be described by:

D (cm2/s) = 5.1 x 10-1 exp[-3.53(eV)/kT]

D.R.Campbell, K.N.Tu, R.O.Schwenker: Thin Solid Films, 1975, 25[1], 213-20

The best linear fits to the solute diffusion data ([124] to [129], [133] to [144], [146] to [176], [188] to [192], [196] to [211], [215] to [223], [234] to [242], [252] to [283], [292] to [298], [306] to [314]) yield:

Al: Ln[Do] = 0.45E – 32.8 (R2 = 0.81); As: Ln[Do] = 0.29E – 23.2 (R2 = 0.87);

Au: Ln[Do] = 0.16E – 12.4 (R2 = 0.16); B: Ln[Do] = 0.29E – 22.6 (R2 = 0.79);

Cu: Ln[Do] = 0.22E (R2 = 0.86); Fe: Ln[Do] = 0.62E – 15.8 (R2 = 0.53);

Ga: Ln[Do] = 0.20E - 16.9 (R2 = 0.78); Ge: Ln[Do] = 0.29E – 23.2.8 (R2 = 0.98);

H: Ln[Do] = 0.17E - 9.9 (R2 = 0.07); Li: Ln[Do] = 0.25E – 9.6 (R2 = 0.48);

Ni: Ln[Do] = 0.29E - 19.4 (R2 = 0.66); O: Ln[Do] = 0.34E – 21.6 (R2 = 0.95);

P: Ln[Do] = 0.35E - 27 (R2 = 0.94); Sb: Ln[Do] = 0.35E – 29.3 (R2 = 0.96);

Si: Ln[Do] = 0.33E - 29 (R2 = 0.86)