Frenkel defects arise due to-

Frenkel defects are

Frenkel defect is the

Frenkel defect is caused due to

Frenkel defect is caused due to

Frenkel defect is caused due to

In Frenkel defect

In Frenkel defect

Schottky defects and Frenkel defects are two stoichiometric defects shown by crystals. Name a crystal showing both Schottky defect and Frenkel defect.