It is often referred to, incorrectly, as a formula for particle size measurement or analysis. Derivation for a simple. Determination of the. Peak broadening due to. What_is_Shape_factor_in_. In the equation, I have found that the shape factor is a dimensionless quantity, with a value close to unity but it varies with the type of crystal structure. Estimating Crystallite Size Using XRD – MIT prism. XRAY › oldsite › CrystalSizeAnalysisprism.
Anistropic peak shapes can be identified by anistropic peak broadening. Crystallite size is normally defined as a size of a single crystal within a polycrystalline solid. Scherrer constant K. X-ray Diffraction Methods to Study Crystallite Size and Lattice Constants of Carbon Materials. Warren showed that the constant Ks is 1. Dp – Average crystallite size (nm).