Evolution of the atomic order and valence state of rare-earth atoms and uranium in a new carbon-metal composite—diphthalocyanine pyrolysate C64H32N16 Me (Me = Y, La, Ce, Eu, and U)

2014 ◽  
Vol 56 (8) ◽  
pp. 1673-1684 ◽  
Author(s):  
A. E. Sovestnov ◽  
V. K. Kapustin ◽  
V. I. Tikhonov ◽  
E. V. Fomin ◽  
Yu. P. Chernenkov
Keyword(s):  
Rare Earth ◽  
Valence State ◽  
Metal Composite ◽  
Atomic Order

Sternheimer Antishielding Functions ß(r) and γ(r) for Rare Earth Atoms

1986 ◽  
Vol 41 (1-2) ◽  
pp. 37-46 ◽  
Author(s):  
K. D. Sen ◽  
P. C. Schmidt ◽  
Alarich Weiss
Keyword(s):  
Rare Earth ◽  
Valence State ◽  
Wave Functions ◽  
Electric Field Gradients ◽  
Hartree Fock ◽  
Field Gradients ◽  
Lanthanide Atoms ◽  
Hf Wave ◽  
Self Consistency ◽  
Consistency Effects

The Sternheimer shielding-antishielding functions ß(r) and γ(r) are reported for all the fourteen lanthanide atoms at the uncoupled Hartree-Fock level of theory. Each atom is considered in two valence state configurations, 4fn 5d0 and 4 fn-1 5d1, and the nonrelativistic HF wave functions have been used. The 5d1 configuration leads to a smaller net antishielding than the 4fn configuration by ~ 6-12% in the series. The electron-electron self consistency effects are found to be less than 5% in the series. The importance of the calculated antishielding functions in the antishielding theory of electric field gradients in noncubic metals is discussed.

On the Valence State of Rare-Earth Ion (R) in RCu2Si2 and RCu2Ge2

1984 ◽  
Vol 125 (2) ◽  
pp. K125-K127 ◽  
Author(s):  
S. K. Ghatak ◽  
M. N. Ghatikar
Keyword(s):  
Rare Earth ◽  
Valence State ◽  
Rare Earth Ion

Hydrothermal shape controllable synthesis of La0.5Sr0.5MnO3 crystals and facet effect on electron transfer of oxygen reduction

2018 ◽  
Vol 5 (3) ◽  
pp. 732-738 ◽  
Author(s):  
Keke Huang ◽  
Long Yuan ◽  
Yilan Jiang ◽  
Jiaxin Zhang ◽  
Zhibin Geng ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Rare Earth ◽  
Valence State ◽  
Alkaline Earth ◽  
Mixed Valence ◽  
Controllable Synthesis ◽  
Controllable Growth ◽  
A Site ◽  
Oxide Crystals ◽  
Alkaline Earth Cations

Controllable growth of perovskite structure oxide crystals with well-defined facets is challenging, especially in the mixed-valence state manganites with both rare-earth and alkaline-earth cations in their A-site.

The local atomic order and the valence state of Cu in Cu-implanted soda-lime glasses

1998 ◽  
Vol 232-234 ◽  
pp. 364-369 ◽  
Author(s):  
F D'Acapito ◽  
S Mobilio ◽  
J.R Regnard ◽  
E Cattaruzza ◽  
F Gonella ◽  
...  
Keyword(s):  
Valence State ◽  
Soda Lime ◽  
Atomic Order

Synthesis, structure, and magnetic properties of the quaternary oxysulfides Ln 5V3O7S6 (Ln = La, Ce)

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Chong Zheng ◽  
Roald Hoffmann ◽  
Timothy S. Perkins ◽  
Frank Calvagna ◽  
Roxanna Fotovat ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Rare Earth ◽  
Valence State ◽  
Mixed Valence ◽  
Magnetic Behavior ◽  
Magnetic Susceptibility Measurement ◽  
Orthorhombic Space Group ◽  
One Dimensional ◽  
The Matrix

Abstract Two rare earth oxysulfides Ln 5V3O7S6 (Ln = La, Ce) have been synthesized and their structures determined. The two isostructural compounds crystallize in the orthorhombic space group Pmmn (no. 59). The structure features one-dimensional edge-sharing VS4O2 octahedron chains parallel to the b axis. The bonding between V and S/O is covalent, and between Ln 3+ and the rest of the matrix ionic. Magnetic susceptibility measurement revealed that V is in a mixed valence state of V3+ and V4+. Its magnetic behavior follows the Curie-Weiss law.

Magnetic properties of some rare earth monoxides LnO (Ln = Pr, Nd, Sm) mixed valence state of SmO

1980 ◽  
Vol 33 (3) ◽  
pp. 351-353 ◽  
Author(s):  
G. Krill ◽  
M.F. Ravet ◽  
J.P. Kappler ◽  
L. Abadli ◽  
J.M. Leger ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Valence State ◽  
Mixed Valence ◽  
Mixed Valence State
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