Absorption Spectra of Lanthanide and Actinide Ions

Magnetoresistance in actinide and lanthanide intermetallics

Magnetoresistance studies in narrow 5f band materials show that a giant drop of electrical resistance accompanies frequently field-induced reorientation of uranium magnetic moments in antiferromagnets. We show that a strong spin-dependent scattering, originating in the strong 5f hybridization with conduction electron states, is the most plausible origin of this effect, the magnitude of which by...

Structure and Thermodynamics of Lanthanide and Actinide Complexes in Solution

Several questions of importance in the study of lanthanide and actinide coordination compounds are reviewed. There is considerable evidence that in aqueous solution the primary coordination number is nine for the ions La(ni) through Nd(m) and eight for the ions heavier than Gd(m). While it seems that some degree of covalency exists in the metal—ligand bonding a model of electrostatic bonding se...

Relativistic Configuration Interaction Calculations for Lanthanide and Actinide Anions

Lattice disorder in strongly correlated lanthanide and actinide intermetallics.

Lanthanide and actinide intermetallic compounds display a wide range of correlated-electron behavior, including ferromagnetism, antiferromagnetism, nonmagnetic (Kondo) ground states, and so-called 'non-Fermi liquid' (NFL) behavior. The interaction between f electrons and the conduction band is a dominant factor in determining the ground state of a given system. However, lattice disorder can cre...

Extraction of Lanthanide and Actinide Ions from Aqueous Mixtures Using a Carboxylic Acid-Functionalized Porous Aromatic Framework.

Porous aromatic frameworks (PAFs) incorporating a high concentration of acid functional groups possess characteristics that are promising for use in separating lanthanide and actinide metal ions, as required in the treatment of radioactive waste. These materials have been shown to be indefinitely stable to concentrated acids and bases, potentially allowing for multiple adsorption/stripping cycl...