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Structural versatility of the epsilon-SmGa(x) phase: X-ray, electron diffraction, and DFT studies
Monique Tillard1, David Zitoun, Claude Belin
1Agrégats, Interfaces, Matériaux pour l'Energie, Institut Charles Gerhardt, UMR 5253 CNRS UM2, CC015, Université de Montpellier 2, Sciences et Techniques du Languedoc, 2 Place Eugène Bataillon, 34095 Montpellier Cedex 5, France. mtillard@univ-montp2.fr
Inorganic Chemistry
|March 10, 2009
Summary
Two novel samarium-gallium (Sm-Ga) compounds were synthesized and structurally characterized. Their crystal structures and electronic properties reveal insights into atomic disorder and bonding in lanthanide-gallium systems.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Crystallography
Background:
- The Sm-Ga system is explored for novel intermetallic compounds.
- Understanding lanthanide-gallium alloys is crucial for materials applications.
Purpose of the Study:
- To synthesize and characterize new Sm-Ga compounds.
- To elucidate their crystal structures and electronic properties.
Main Methods:
- Single-crystal X-ray diffraction for structural determination.
- First-principle Density Functional Theory (DFT) for electronic structure calculations.
Main Results:
- Two new compounds, SmGa(2.67) and SmGa(3.64), were identified.
- Their crystal structures were solved, revealing consistent atomic disorder.
- Electronic structures were calculated, and bonding analyzed via gallium anionic networks.
Conclusions:
- The study successfully identified and characterized novel Sm-Ga intermetallic compounds.
- Atomic disorder and bonding mechanisms were investigated.
- Comparisons were made with other lanthanide-gallium systems.
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