The use of a density functional theory methodology with on-site corrections (DFT+ U) has been repeatedly shown to give an improved description of localised d and f states over …
The actinide oxides play a vital role in the nuclear fuel cycle. For systems where current experimental measurements are difficult, computational techniques provide a means of …
A new group of thermoelectric materials, trigonal and tetragonal XYZ2 (X, Y: rare earth or transition metals, Z: group VI elements), the prototype of which is TmAgTe2, is identified by …
Based on density functional theory (DFT) and empirical potential calculations, the diffusivity of fission gas atoms (Xe) in UO 2 nuclear fuel has been calculated for a range of non …
The fluorite structured actinide dioxides (AnO2), especially UO2, are the most common nuclear fuel materials. A comprehensive understanding of their surface chemistry is critical …
E Vathonne, J Wiktor, M Freyss… - Journal of Physics …, 2014 - iopscience.iop.org
We present a physically justified formalism for the calculation of point defects and cluster formation energies in UO 2. The accessible ranges of chemical potentials of the two …
To explore the formation of noncollinear magnetic configurations in materials with strongly correlated electrons, we derive a noncollinear LSDA+ U model involving only one parameter …
The importance of ceria (CeO 2) in many applications originates from the ease of oxygen vacancy formation and healing. The ordering of vacancies and the whereabouts of the …
The charge-transfer insulating perovskite oxides currently used as fuel cell electrolytes undergo, at high temperature, an oxidation reaction 1 2 O 2 (g)+ VO••→ OOX+ 2 h•, that …