There are 2 types of defects
1. Point defect
2. Electronic defect
POINT DEFECT:
It is further divided into 3 types
1.Stoichiometric defect
2.Non stochiometric defect
3. Impurity defect
1. STOICHIOMETRIC DEFECT: It is further classified into 4 defects
1. Vacancy defect - Nacl, kcl, kbr etc
2.Interstitial defect -Agcl , zns etc
3.schotky defect - Agbr, kcl, kbr etc
4. Frenkel defect- Agbr, Agcl etc
2. NON STOICHIOMETRIC DEFECT:
1.Metal excess defect- ZnO
2.Metal deficiency defect - FeO