Equilibrium defect concentrations and their mobility in the crystalline lattice of cobaltous oxide

Abstract

Concentration and mobility of point defects in Co1−yO have been determined with the Rosenburg kinetic method as a function of temperature and equilibrium oxygen pressure in the temperature range 1000–1250°C and oxygen pressure range 3×10−3−1 atm. On the basis of these data the enthalpy of defect formation and activation energy of their mobility in crystalline lattices of cobaltous oxide have been calculated. The degree of ionization of the defects has been determined, and the self-diffusion coefficient of cobalt in cobaltous oxide and the activation energy of self-diffusion have been calculated.