Structural Consequences of Point Defect Populations

coexist with vacancies on Fe sites, VFe (Section 1.10). The iron sites, therefore, contain populations of two defects, vacancies and aluminum atoms. 

Calculations of defect formation energies (Section 2.10) will allow estimates of the numbers of each kind of defect present to be made using formulas of the type  

Moreover, point defects will undoubtedly cause significant crystallographic distortions in the region of the affected site, which endow the defects with a 

---