Uploaded by abrarmubasshirrahman

solid defect

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why certain number
of defect should
always remain in the
crystal and why is it
necessary
suppose there are 15 positive and 16 negative ions. If by schottky effect one extra negative ion is vacated
then the crystal will become charge neutral on a local scale which is favourable.By this we can know the
importance of vacancy.
Karon Apa bolesen
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