What can studies of the pair-distribution functions (PDF) contribute to our knowledge about UO2?
Year: 2025
Type: article
Abstract: Uranium dioxide has been studied for 70 years but still has some poorly understood properties. We present our last results using neutron total-scattering methods that evidence local deviations from average structure in UO2 Pair-Distribution Function (PDF). At high temperature, this deviation appears as a decreasing of the UO distance with temperature, which we interpret as a phonon-induced dynamic distortion of uranium’s local environment. At low temperature, this deviation takes place in UO2 magnetic order above the magnetic transition, which is still under study. Graphical abstract
Source: MRS Communications
Institutions: Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Cadarache, Institut de Recherche sur les Systèmes Nucléaires pour la production d'Energie bas carbone, Institut Laue-Langevin, Joint Research Centre, Centre National de la Recherche Scientifique, Université Paris-Saclay, CentraleSupélec
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,390
OpenAlex ID: W4410483763