Question

What causes metal deficiency defects?

Answer 1

Metal deficiency defects:

• Those solids that involve less amount of metal in comparison to the stoichiometric proportion exhibit metal deficiency effects.
• These kinds of solids are difficult to prepare in the stoichiometric composition.

Example:

• An example of a metal deficiency defect is $\mathrm{FeO}$.
• It is majorly found with a composition of ${\mathrm{Fe}}_{0.95}\mathrm{O}$. It ranges from ${\mathrm{Fe}}_{0.93}\mathrm{O}\mathrm{to}{\mathrm{Fe}}_{0.96}\mathrm{O}$.