What data does XRD give?
X-ray powder diffraction (XRD) is a rapid analytical technique primarily used for phase identification of a crystalline material and can provide information on unit cell dimensions. The analyzed material is finely ground, homogenized, and average bulk composition is determined.
What is Jcpds database?
The JCPDS (Joint Committee on Powder Diffraction Standards) is the “old name” of our ICDD (International Centre for Diffraction Data). Most of file from ICDD database are also published in different journals. Therefore, you can use ICDD as reference in your work.
What is a 2D detector?
A 2D detector enables the user to take a “picture” of the diffraction pattern, effectively providing data that are usually obtained from multiple XRD scans using point and 1D detectors at the expense of data resolution.
What information can we get from XRD?
A primary use of XRD analysis is the identification of materials based on their diffraction pattern. As well as phase identification, XRD also yields information on how the actual structure deviates from the ideal one, owing to internal stresses and defects [1].
What is Icdd in XRD?
The International Centre for Diffraction Data (ICDD®) is a non-profit scientific organization dedicated to collecting, editing, publishing, and distributing powder diffraction data for the identification of materials.
How do I get Jcpds data?
You can find it from some of these websites.
- https://www.nist.gov/programs-projects/crystallographic-databases.
- http://rruff.geo.arizona.edu/AMS/amcsd.php.
- http://www.icdd.com/index.php/pdfsearch/
Why some peaks have higher intensity in XRD pattern?
Intensity is proportional to the number of scatterers per unit area of a given atomic plane and therefore the peak intensities in an XRD experiment will vary. Usually, with increasing plane indices (higher angles in the pattern), the intensity of the peak goes down.
How get CIF from XRD?
You can find your cif file after an expert work on your pattern. The program FullProf can help you in order to do this. First you check whether the structure of your material is reported or not. If it is reported than take the cif from data base and use in your refinement process.