Abstract
The relatively large spatial extent of 5f-electron wave-functions of actinide ions yields increased probability of the overlap with 5f wave functions of actinide neighbors and wave functions of valence electrons of other ligands in alloys and intermetallic compounds. Consequently, the original actinide free-ion character of 5f electron states is modified to smaller or larger extent depending on the geometry of the actinide ion neighborhood and the electronic states of ligands. The involved 5f-ligand hybridization plays an underlying role in formation of a 5f magnetic moments and correlations between them (Cooper et al., 1985; Hu and Cooper, 1993; Koelling et al., 1985). These attributes essentially determine the difference between magnetism and related electronic properties of light actinide (U÷Pu) based intermetallic materials and their lanthanide counterparts.
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Sechovský, V., Havela, L., Prokeš, K., Andreev, A.V. (1999). Anomalous Magnetic and Related Electronic Properties of Uranium Intermetallic Compounds. In: Gonis, A., Kioussis, N., Ciftan, M. (eds) Electron Correlations and Materials Properties. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-4715-0_6
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