%0 Conference Proceedings %T An In Situ High Temperature Investigation of Cation Environments in Aluminate and Silicate Glasses and Liquids at the LUCIA Beamline %+ Institut de Physique du Globe de Paris (IPGP) %+ Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC) %+ Centre National de la Recherche Scientifique (CNRS) %A Neuville, Daniel R. %A Cormier, Laurent %A Roux, Jacques %A de Ligny, Dominique %A Flank, Anne-Marie %A Henderson, Grant S. %A Lagarde, Pierre %B X-Ray Absorption Fine Structure - XAFS13: 13th International Conference. Proceedings held at Stanford %C à renseigner, Unknown Region %V 882 %P 413-415 %8 2022-03-09 %D 2022 %Z 2007AIPC..882..413N %R 10.1063/1.2644543 %K 61.10.Ht %K 61.20.-p %K 61.43.Fs %K 61.66.Fn %K X-ray absorption spectroscopy: EXAFS NEXAFS XANES etc. %K Structure of liquids %K Glasses %K Inorganic compounds %Z Sciences of the Universe [physics]Conference papers %X The structure of crystals and melts were obtained at high temperature using X-ray absorption at the Ca K-edge on CaMgSi2O6 (diopside), CaAl2Si2O8 (anorthite), Ca3Al2O6 (C3A) and CaAl2O4 (CA) compositions. Important changes are observed above the liquidus temperature particularly for the C3A composition where all oscillations in the XANES spectra disappear. Important changes in the Ca K-edge XANES are also visible in the pre-edge region, with increasing temperature, for crystalline CaMgSi2O6. %G English %L insu-03603198 %U https://insu.hal.science/insu-03603198 %~ INSU %~ MNHN %~ UNIV-PARIS7 %~ AFRIQ %~ CNRS %~ IPGP %~ IMPMC %~ ALLINSP %~ SORBONNE-UNIVERSITE %~ SORBONNE-UNIV %~ SU-SCIENCES %~ UNIV-PARIS %~ ALLIANCE-SU