Question

When can anyone observe the Schottky defect?

Answer 1

Schottky defect:

• Schottky defect is a stoichiometric point defect. It is considered to be a vacancy defect in ionic solids.
• This defect arises when a position becomes vacant due to the movement of the atoms or ions from the interior of the crystal to the surface.

Observance of Schottky defect:

• Schottky defect can be observed when an equal number of anions and cations are missing from the crystal lattice.
• The important aspect of the Schottky defect is that the number of missing anions and cations is equal so that the electrical neutrality of the crystal can be maintained.

Characteristics of Schottky defect:

• The crystal is observed to have two vacancies.
• The size of the anions and cations is almost similar.
• Both anions and cations leave their positions.
• The density of the crystal decreases.