training for advanced research


Glossary terms about Crystallite

Term for tiny crystals, too small for the unaided eye to detect.

27 pages mention Crystallite

Additional material
Analysis of data
Peak analysis gives us information on crystallite size distribution, microstrain analysis and extended defect concentration. 
Applications of XRD
They include identification of crystalline particles which cause tiny faults in bulk glass, and measurements of crystalline coatings for texture, crystallite size and crystallinity. 
Crystal groups
Entry slit at low angles
Exit slit
How to process XRD files in EVA
Interesting facts
It can, therefore, be used to measure the crystalline content of materials; identify the crystalline phases present (including the quantification of mixtures in favourable cases); determine the spacing between lattice planes and the length scales over which they persist; and to study preferential ordering and epitaxial growth of crystallites. 
Nobel prizes for research with X-Rays
Powder diffraction
A finely ground crystalline powder contains a very large number of small crystals known as crystallites, which should be oriented randomly to one another. 
Powder diffractometer
So how are the crystallites aligned to fulfil the Bragg conditions? As a matter of fact, they are not aligned, at least not on purpose. 
Primary optics
Sample holder & stage
Sample preparation
There are two types of mounts normally employed depending on the nature of crystallite orientation required. 
Secondary optics
Sources - iron poor samples
Sources - iron rich samples
Step-by-step instructions to use the Bruker D8 advanced research XRD
Tailor this module
Using the machine
The highest (most inaccurate) value out of all these machine parts will be the limit for the step size using that machine, as using any less will just waste time and resources. Sample preparation When using an X-ray diffractometer, the analysis relies on the fact that the sample contains crystallites of all possible orientations.