Size, shape, and internal atomic ordering of nanocrystals by atomic pair distribution functions: A comparative study of γ-Fe2O 3 nanosized spheres and tetrapods

Valeri Petkov, P. Davide Cozzoli, Raffaella Buonsanti, Roberto Cingolani, Yang Ren

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

(Figure Presented) Due to their limited length of structural coherence nanocrystalline materials show very diffuse powder X-ray diffraction patterns that are difficult to interpret unambiguously. We demonstrate that a combination of high-energy X-ray powder diffraction and atomic pair distribution function analysis can be used to both assess the geometry (i.e., size and shape) and determine the internal atomic ordering of nanocrystalline materials in a straightforward way. As an example we consider cubic γ-Fe 2O3 nanosized crystals shaped as spheres and tetrapods.

Original languageEnglish
Pages (from-to)14264-14266
Number of pages3
JournalJournal of the American Chemical Society
Volume131
Issue number40
DOIs
StatePublished - Oct 14 2009

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