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Write any two differences between Frenkel and Schottky defects.

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Schottky defect Frenkel defect
1) It is caused by missing of equal number of cations and anions from lattice points to maintain electrical neutrality. 1) The smaller ion (Cation) is dislocated from its normal site to an interstitial site.
2) Density decreases 2) Density is not changed
3) It is shown by ionic substances in which the cation and anion are of almost similar sizes. 3) It is shown by ionic substances in which there is a large difference in the size of ions.

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