Question
What is the difference between Schottky and Frenkel defect ?
✓
Answer
| Frenkel Defect | Schottkey Defect | |
| 1. | The positive and negative ions (cations and anions) leaves its lattice position and occupies a vacant interstitial site existing between the cations and anions in the crystal. | The positive and negative ions are completely missing from their lattice positions. The number of cations and anions which are missing is the same. |
| 2. | Density remains the same. | Density of the crystal decreases. |
| 3. | Dielectric constant incre-ases. | Dielectric constant remains the same. |
| 4. | Stability decreases and electrical conductivity increases, due to presence of ions in voids. | Stability of crystal decreases and the electrical conductivity increases due to the formation of voids. |
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