When can anyone observe the Schottky defect?

In the Schottky defect, an equal number of cations and anions are missing from the lattice.

What is the Schottky defect?

The Schottky defect is a type of point defect or imperfection in solids caused by a vacant position generated in a crystal lattice due to the atoms or ions moving out from the interior to the surface of the crystal.

Characteristics Of Schottky Defect

  • There is a minimal difference in size between cation and anion.
  • Cation and anion both leave the solid crystal.
  • Atoms also move out of the crystal permanently.
  • Generally, two vacancies are formed.
  • As for the density of the solid, it decreases considerably.

The schottky defect is prominent include Sodium Chloride (NaCl), Potassium Chloride (KCl), Potassium Bromide (KBr), Caesium Chloride (CsCl) and Silver Bromide (AgBr).

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