CRYSTALLOGRAPHY CONGRESS 2020

Physical Properties of Crystals

There are different properties of crystallography used to find the crystal diffraction and Precession electron diffraction (PED) is one of the methods to gather the electron diffraction patterns in a type of microscope called transmission electron microscope (TEM). Using this method the patterns are seen by processing an incident electron beam across the central axis of the microscope, then there is PED pattern that is formed by integration along the diffraction patterns. These patterns will produce a quasi-kinematical diffraction pattern that is mostly used as input for the direct methods algorithms to understand the crystallography structure of any sample or crystal.