The U4Re7Si6 type - Trends in electronic structure and chemical bonding
Langue
en
Article de revue
Ce document a été publié dans
Solid State Sciences. 2014, vol. 27, p. 5-10
Elsevier
Résumé en anglais
The electronic structures and chemical bonding of selected ternary compounds of the A4T7X6 family (of U4Re7Si6-type) intermetallics have been studied by ab initio methods. The calculations for two series: Mg4Rh7P6, Sc4Co7Ge6, ...Lire la suite >
The electronic structures and chemical bonding of selected ternary compounds of the A4T7X6 family (of U4Re7Si6-type) intermetallics have been studied by ab initio methods. The calculations for two series: Mg4Rh7P6, Sc4Co7Ge6, Ti4Co7Ge6 and uranium containing U4Re7Si6, U4Ru7Ge6, and U4Ru7As6 show common bonding characteristics pertaining to main T1-X and T2-X interactions (T = transition metal and X = p-element) due to the peculiar crystal chemistry with T1@X6 and T2@X4 coordination polyhedra. The uranium compounds are found to be stabilized in a spin polarized ferromagnetic configuration, especially for U4Ru7Ge6 (in agreement with experiment) and U4Ru7As6.< Réduire
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