Schottky Defect – Sodium Chloride

The animation shows a Schottky defect in NaCl. Schottky defects are point defects that occur when a pair of ions leave the structure. This maintains the overall charge but also results in a reduction in density of the solid. Consequently there is a relaxtion of the ions around the vacant site and slight increase in volume.

Schottky defects can lead to ionic conduction in solids. View the mechanism of conduction.

Return to the ionic conductivity home page.

M. J. de Castro, J. Phys.-Condens. Matter, 2008, 20, 3.


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