Valence, coordination number, and PAV cells in metallic rare earth compounds

Valence, coordination number, and PAV cells in metallic rare earth compounds

— Polyhedral atomic volumes, Voronoi volumes, generalized coordination numbers, and Pauling's metallic valences are given for 24 intermetallic rare earth compounds. The results clearly indicate that as much as 33 % rare earth isovalent volume contraction can occur upon compound formation while the atomic volumes of aluminum and the transition elements are nearly constant. Earlier discussions of...

Mössbauer Effect Studies of Interconfiguration Fluctuations in Metallic Rare Earth Compounds

Recoilless absorption spectra of the 21.6 keV gamma ray of IslEu in EuCu~Si2 and in EuRh2 reveal a single absorption line which has a strongly temperature dependent isomer shift. The recoilless absorption spectra in E ~ ~ L a l ~ R h 2 (0.075 < x < 0.5), Eu.125Pr.87~Rh2 and E u R h ~ ~ p t ~ (0.125 < x < 1) are composed of a few lines, many of which also exhibit strongly temperature dependent i...

Quadrupole Interactions in Rare-earth Intermetallic Compounds

A survey of the role played by the one-ion magnetoelastic and two-ion quadrupolar interactions on the magnetic and elastic properties of the rare-earth intermetallic compounds is given. These couplings are present in numerous systems and manifest themselves through a great variety of effects. The study of the multipolar interactions concerning the 4f shell has known a great development about ra...

Valence and spectral properties of rare-earth clusters

Ternary Rare Earth Transition Metal Zinc Compounds

Forty eight new com pounds RT2Z n2o were prepared by annealing cold-pressed pellets o f the elem ental com ponents in an argon atm osphere. They crystallize with the cubic CeCr^Abo type structure (Fd3m , Z = 8), which was refined from single-crystal diffractom eter data o f TbFeiZn^o (a = 1411.1(1) pm), Y Ru2Z n2o (a = 1422.6(1) pm), D yRu2Z n2o (a = 1422.1(1) pm), G dC o2Z n2o (a = 1406.0(1) p...