Frenkel, Schottky,Void,Interstitial Defect explained

1.Lattice Defects /Void defects :

Vacancy /Void Defect

2.Interstitial Defect :

Interstitial Defects

3.Frenkel Defect:

• This defect arise in ionic Solids.
• In this small ions(cations) move from it original site and occupy interstitial site in the ionic solids.It is a combination of vacancy and interstitial defect
• Example: for example, ZnS, AgCl, AgBr, and AgI due to small size of Zn2+ and Ag+ ions.
• This defect is also called dislocation defect

Frenkel Defects

4.Schottky Defect :

to memorize difference between frenkel and schottky defect just remember that Schottky defect start from S (S means same so same no. of atoms are missing )

•       It is a type of vacancy defect in this to maintain ionic neutrality same number cation and anion are missing

•       This defect cause decrease in the density of ionic solid

•       For example, NaCl, KCl, CsCl, and AgBr.

•       Note : that AgBr shows both, Frenkel as well as Schottky defects

Schottky Defect