Nanoparticle size distribution estimation by full-pattern powder diffraction analysis

Details Nanoparticle size distribution estimation by full-pattern powder diffraction analysis Nanoparticle size distribution estimation by full-pattern powder diffraction analysis

2005-02-24

arxiv.org/abs/cond-mat/0502583v1

Phys. Rev. B 72, 35412 (2005)

Physics

Condensed Matter

Materials Science

10 pages, 4 figures; submitted to Phys. Rev. B

Scientific paper

10.1103/PhysRevB.72.035412

The increasing scientific and technological interest in nanoparticles has raised the need for fast, efficient and precise characterization techniques. Powder diffraction is a very efficient experimental method, as it is straightforward and non-destructive. However, its use for extracting information regarding very small particles brings some common crystallographic approximations to and beyond their limits of validity. Powder pattern diffraction calculation methods are critically discussed, with special focus on spherical particles with log-normal distribution, with the target of determining size distribution parameters. A 20-nm CeO$_{2}$ sample is analyzed as example.

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