[Sans titre]
Langue
en
Article de revue
Ce document a été publié dans
Intermetallics. 2012, vol. 31, p. 88-93
Elsevier
Résumé en anglais
The electronic structures of the intermediate-valent cerium compounds Ce4RuMg, Ce23Ru7Mg4, CeRu2Mg5, and Ce2Ru4Mg17 were studied ab-initio by DFT calculations. Common structural characteristics are short Ce∼4+-Ru bonds ...Lire la suite >
The electronic structures of the intermediate-valent cerium compounds Ce4RuMg, Ce23Ru7Mg4, CeRu2Mg5, and Ce2Ru4Mg17 were studied ab-initio by DFT calculations. Common structural characteristics are short Ce∼4+-Ru bonds accompanied by intermediate-valent or almost tetravalent cerium. The degree of depletion of the cerium 4f shell is well monitored in the DOS plots, paralleled by strong covalent Ce-Ru bonding. We also derive magnitudes for the electronic contribution to the specific heat of these compounds in order to appreciate their intermediate valence behaviours.< Réduire
Mots clés en anglais
Rare-earth intermetallics
Ab-initio calculations
Origine
Importé de halUnités de recherche