X-ray total scattering investigation of Al_0.57Sn_0.43O_1.71nanoparticles

Abstract

X‐ray pair distribution function (PDF) analysis of Al0.57Sn0.43O1.71, a promising candidate as anode material for Li ion batteries, has been carried out using synchrotron radiation at 60 keV. The average and short‐range ordering of nanocrystalline Al0.57Sn0.43O1.71 was investigated both with the traditional Rietveld refinement method and with X‐ray PDF analysis. The instrumental parameters of the high‐resolution powder diffraction beamline P02.1, Petra III, have been characterized. Reverse Monte Carlo (RMC) refinements based on PDF data indicate that Al substitution induces local distortions around the Al/Sn atoms and that oxygen vacancies, induced by the Al substitution, are mostly located on an anion site around the Al atoms. Additionally, RMC refinements hint at a clustering of Al atoms.

Multi-analyser detector (MAD) for high-resolution and high-energy powder X-ray diffraction

“…In this article, we present a ten-channel MAD for the powder-diffraction side station P02.1 (Dippel et al, 2015;Herklotz et al, 2013) at the PETRA III storage ring of the Deutsches Elektronen-Synchrotron (DESY) in Hamburg, Germany. This side station operates with an undulator as a radiation source at a fixed energy of 60 keV and is dedicated to high-resolution powder diffraction for material science applications (Liu et al, 2017;Hinterstein et al, 2018), in situ and in operando studies (Schader et al, 2016;Geiger et al, 2017Geiger et al, , 2018Mgbemere et al, 2017;Hinterstein et al, 2019;Riess et al, 2019;Lee, Shi, Kumar, Hoffman, Etter, Checchia, Winter et al, 2020;Choe et al, 2015), and total-scattering experiments (Yavuz et al, 2015). Together with proper synchronization with a periodic excitation, this detector can also be used for high-resolution in situ and in operando stroboscopic measurements on materials under the influence of external stimuli (Liu et al, 2020;Choe et al, 2015).…”