Diffusion of interstitial atoms in interstitial alloys FeSi and FeH with BCC structure under pressure

In this paper, we apply these theoretical results to interstitial FeSi and FeH in the interval of interstitial atom concentration from 0 to 5%, the interval of temperature from 100 to 1000K and the interval of pressure from 0 to 70GPa. Our calculated results are in good agreement with experiments or predict the experimental results.