|
2.5 Defect Structures in Non - Stoichiometric Oxides
Mainly of two types
Oxygen deficient (or excess metal)
Metal deficient (or excess oxygen)
Nonstoichiometry necessitates presence of point defects and extent of non-stoichiometry determines the concentration of Defects.
-
In such oxides, electrical neutrality is preserved via the formation of point defects and electronic changes.
Intrinsic ionization is always a possibility.
|