Conductivity measurements were performed on monocrystalline samples of Ca-doped (1mol%CaO) material at temperatures ranging from 1000 to 1400C, under O partial pressures of more than 10-8atm. The re-equilibration kinetics were explained in terms of chemical diffusion. On the basis of the results, it was suggested that the transport properties and defect structure of Ca-doped samples was strongly related to the presence of Ca-vacancy complex defects.

S.Golec, G.Petot-Ervas, G.Dhalenne, S.Jasienska, C.Petot: Solid State Phenomena, 1995, 41, 129-36