Calculate the self-diffusion coefficient in the primitive cubic -Po (Figure 1.23; Figure 1.23 3.36 ) at 500 K via vacancy mechanism, assuming 0.001 vacant sites,

Calculate the self-diffusion coefficient in the primitive cubic α-Po (Figure 1.23;

Figure 1.23

3.36 ) at 500 K via vacancy mechanism, assuming 0.001 vacant sites, v = 10 s, A Gm = 36 kJ/mol. Estimate the diffusivity of the vacancy. a=