Point Defects and Cation Diffusion in Magnetite

摘要: Here two remarks should be made:(a) Similarly to magnetite a minimum in the diffusion data measured as a function of the oxygen potential has been found for cobaltferrite4. It has been interpreted according to the lines mentioned above,(b) Taking into account the occurrence of jPe-ions on tetrahedral and octahedral regular cation sites in the spinel structure and the equally coordinated interstitial sites, one can understand that an appreciable thermal" quasi-Frenkel" disorder existsin magnetite which is responsible for the increase of