What are impurity defects ? Explain.

What is an impurity defect?

What is an impurity defect? What kind of impurity defect is generated in a NaCl crystal when it is doped with a small amount of SrCl_(2) ? Calculate the number of cation vacancy per Sr^(2+) ions is this crystal?

What is super conductivity? Define impurity defects of solid with example.

What are non-stoichiometry defects in crystals ? Explain.

What do you mean by defect in a crystal? What are point defects in a crystal?

What are point defects in crystals ? Describe the Schottky defects in crystals.

What is sehottky defect?

What is Frenkely defect?

What are non-stoichiometric defects in an ionic crystal? Explain how metal excess defects occur in an ionic crystal.

What are non-stoichiometric defects? Give two example of such defects.