The equilibrium concentration of Schottky defects in metal oxide having a formula MO is 5.7 times 10^9/m^3 at 750 degree C and 5.8 times 10^17/m^3 at 1500 degree C. The density of die oxide at these temperatures is found to be 3.5 g/cm^3 at 750 degree C and 3.4 g/cm^3 at 1500 degree C. Determine the activation energy for defect formation. What would the equilibrium concentration of Shottky defects at 1000 degree C when the oxide has a density of 3.45 g/cm^3?
