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defects

Asked by Himanshu Tripathi 2nd October 2013, 6:15 PM
Answered by Expert
Answer:
In AgBr, the Ag ions (and corresponding Br ions) are absent from the crystal lattice causing Schottky defects. However, Ag +ions are exceptionally mobile and they have a tendency to move about inside the lattice. So they complement the Schottky defects with Frenkel defects with the Ag+ ions trapped in interstitial spaces. This is because of the similar size of Ag ions and Br ions and the small size of Ag +ions and the fact that Ag ions have a property to be mobile in the structure.
Answered by Expert 3rd October 2013, 9:06 AM
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