# Exercise 2.1-6

# Enthalpy difference for the limiting cases of Schottky or Frenkel Defects

| The equations for the concentration of the three point defects contain in parts the differnce of the formation enthalpies of Schottky or Frenkel defects.
|  | Calculate the ratio of the concentration of Schottky to Frenkel defects as a function of this enthalpy difference.
|  | Discuss the result. Show in in particular, how large the difference must be if 90% or 99%, resp., of the defects are to be of one kind.
| Link to the Solution

With frame

2.1.4 Mixed Point defects

Exercise 2.1-8 Quick Questions

Point Defects in Ionic Crystals

Solution to Exercise 2.1-6

© H. Föll (Defects - Script)