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What is the difference between HR-XRPD and TS-PDF analysis?

High-Resolution X-ray powder diffraction (HR-XRPD) and total scattering pair distribution Function (TS-PDF) analysis are complementary techniques that provide different insights into material structure:

HR-XRPD:

  • Focuses on long-range, periodic atomic arrangements
  • Provides crystal structure information (unit cell, space group, atomic positions)
  • Excellent for phase identification and quantification
  • Can determine crystallite size and strain
  • Best suited for crystalline materials with long-range order
 

TS-PDF:

  • Analyzes both Bragg peaks and diffuse scattering
  • Provides local structure information (bond distances, coordination)
  • Works for both crystalline AND amorphous materials
  • Reveals short and medium-range ordering (typically 1–30 Å)
  • Can detect local distortions not visible in average structures