Influence of crystallite shape on particle size broadening of Debye-Scherrer reflections

Abstract

Formulae for the Scherrer constant Kβ, the variance Scherrer constant Kω and the taper parameter Lω for crystals having the external shapes of a triangular prism, a square prism, a hexagonal prism and a cylinder have been obtained in terms of the reflection indices and proportionality factors, viz., the ratio of the height of the crystal to the square root of its basal area and the ratio of the two lattice constants of the unit cell. The numerical values of Kβ, Kω and Lω have also been computed for direct application in particular cases. © 1966 Indian Academy of Sciences.