Agenda Discussion: Transport of Mass and Charge

Abstract

Kofstad opened the session with several remarks on lattice self-diffusion in binary oxides. He first posed the question of how the presence of shear structures or defect clusters affect lattice diffusion and also brought up the question of the stability of these structures at high temperature. He then stated that if one looks at actual data rather than comparing separately D_o ′s or activation energies as is often done, the state of diffusion measurements was not in such bad shape as was sometimes inferred. There are systematic trends and variations for certain classes of oxides.