Many factors may contribute to the observed peak broadening Instrumental Peak Profile ·Crystallite Size ·Microstrain Non-uniform Lattice Distortions Faulting Dislocations Antiphase Domain Boundaries -Grain Surface Relaxation Solid Solution Inhomogeneity ·Temperature Factors The peak profile is a convolution of the profiles from all of these contributionsMany factors may contribute to the observed peak broadening • Instrumental Peak Profile • Crystallite Size • Microstrain – Non-uniform Lattice Distortions – Faulting – Dislocations – Antiphase Domain Boundaries – Grain Surface Relaxation • Solid Solution Inhomogeneity • Temperature Factors • The peak profile is a convolution of the profiles from all of these contributions