In previous publications the author put forward a relation which, for face-centered cubic metals and intermetallic compounds with B2 and L12 structures, connected the activation energy of self-diffusion with lattice constant and shear modulus. It was one aim of the present study to show that this formalism could be extended to intermetallic compounds with C1, D03 and C15 crystal structures. Since the covalently bonded cubic semiconductors and ceramics obey a different law, the question concerning the influence of the chemical bond was additionally investigated. Therefore ionic crystals and oxides with B1, B2 and C1 structures were analyzed. It was demonstrated that these materials obey the same law as the metals and intermetallic compounds, for the B1 structure, however, the pre-factor of the common rule was different. To be able to evaluate such differences, the proposed relation had to be more quantitatively derived than it was done before. Some cubic transition metals did not fit in the general picture. The deviations were traced back to the binding properties of the electronic d-bands.

A Single Law for the Activation Energies of Self-Diffusion of Various Cubic Metals, , Ionic Crystals and Oxides. H.Siethoff: Physica Status Solidi B, 2006, 244[4], 1296-303