Rietveld Refinement

The powerful X-Ray Diffraction (XRD) technique, the Rietveld Refinement method was originally used for crystal structure analysis. However, this method is presently used to great effect in Quantitative Phase Analysis affording greater precision over traditional quantitative XRD techniques. The Rietveld Refinement method offers:

  • Quantitative Phase Analysis, e.g. crystalline forms of SiO2: Quartz, Tridymite Cristobalite and amorphous silica
  • % Crystallinity for partially crystalline materials, e.g. glassy materials
  • Atomistic resolution for solid solution materials used in key technologies, e.g. electro-ceramics and PbTi1-xSnxO3
  • Unit cell size determination of fundamental material e.g. Zeolites and Hydroxyl-Apatite related bio-ceramics
  • Crystallite size determination from the fundamental parameters approach
  • Global residual strain.

Typical Applications

  • Phase composition determination
  • Characterisation of doped cell structures for electro-ceramics
  • Crystallite size analysis of nano-powders
  • Percentage amorphous content of zeolites used as catalysts
  • Residual strain due to solid solution formation
  • Crystallographic response to chromophore doping in ceramic pigments
  • Bespoke quantification/crystallographic characterisation of novel/functional materials.

Typical Industries using XRD

  • Aerospace
  • Automotive
  • Materials
  • Minerals
  • Glass, Ceramics and Refractories
  • Healthcare
  • Medical Devices
  • Semiconductors
  • Electronics.

XRD Application Note

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