期刊
JOURNAL OF APPLIED CRYSTALLOGRAPHY
卷 56, 期 -, 页码 103-109出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1600576722010858
关键词
extended X-ray absorption fine structure; EXAFS; wide-angle X-ray scattering; WAXS; reverse Monte Carlo; RMC; nanocrystals; LaFeO3
This study overcomes the finite size effects in partial pair distribution functions using a binned version of the Debye scattering equation. Reverse Monte Carlo simulations were performed on very small nanoparticles of LaFeO3 with diameters below 10 nm to analyze X-ray scattering data and extended X-ray absorption fine structure spectra at the La K and Fe K edges simultaneously. The results provide consistent structural information regarding local structure and long-range order.
Finite size effects in partial pair distribution functions generate artefacts in the scattering structure factor and scattering intensity. It is shown how they can be overcome using a binned version of the Debye scattering equation. Accordingly, reverse Monte Carlo simulations are used for very small nanoparticles of LaFeO3 with diameters below 10 nm to simultaneously analyse X-ray scattering data and extended X-ray absorption fine structure spectra at the La K and Fe K edges. The structural information obtained is consistent regarding local structure and long-range order.
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