Texture and pole figures

XRD for determining the distribution of crystallographic orientations

Texture and pole figuresIn materials science, texture is the distribution of crystallographic orientations of a sample. A sample in which these orientations are random is said to have a random texture. If the crystallographic orientations are not random, but have some preferred direction, then the sample has a weak, strong, or moderate texture. The degree is dependent on the percentage of crystals that have the preferred orientation. Texture is seen in almost all engineered materials, and it can have a great influence on material properties. Texture is often represented using a "pole figure," in which a specified crystallographic axis (or pole) from each of a representative number of crystallites is plotted in a stereographic projection, along with directions relevant to the material's processing history. A "rocking curve" is a short pole figure cut in one crystallographic direction, where the profile width is a figure of merit for the degree of texture.

Systems

TTRAX III   TTRAX III
World's most powerful θ/θ high-resolution X-ray diffractometer features an in-plane diffraction arm
  RAPID II   RAPID II
Curved imaging plate (IP) XRD system features an extremely large aperture and a choice of rotating anode or sealed tube X-ray sources
   
Ultima IV   Ultima IV
High-performance, multi-purpose XRD system for applications ranging from R&D to quality control
  SmartLab   SmartLab
Advanced state-of-the-art high-resolution XRD system powered by Guidance expert system software