RMX compounds formed by alkaline earths, europium and ytterbium IV: Ternary phases with M = Ag and X = Si, Ge, Sn, Pb
| Autor: | Franco Merlo, Maria L. Fornasini, Marcella Pani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1996 |
| Předmět: |
Ytterbium
Materials science Silver Silicon Intermetallics Powder metals X ray diffraction Alkaline earth metals Composition Crystallization Electrons Heavy metals Intermetallics Metalloids Powder metals Rare earth elements Silver Single crystals X ray diffraction Electron concentration factor Equiatomic composition Ternary systems Alkaline earth metals Intermetallic chemistry.chemical_element Electrons Crystal structure Materials Chemistry Rare earth elements Equiatomic composition Metalloids Alkaline earth metal Mechanical Engineering Metals and Alloys Crystallography chemistry Heavy metals Mechanics of Materials Single crystals Ternary operation Europium Tin Crystallization Electron concentration factor Composition |
| Popis: | The ternary RAgX phases, with R = Ca, Sr, Ba, Eu, Yb and X = Si, Ge, Sn, Pb, were structurally studied by means of X-ray diffraction on powders and single crystals. The tin and lead compounds exist on the equiatomic composition and crystallize in the CeCu 2 , CaLiSn and YbAgPb types. The silicon and germanium compounds are in most cases nonstoichiometric and belong to the CeCu 2 and A1B 2 types, and to three new variants of the A1B 2 structure: SrAgGe, Ba 3 Ag 2 Si 3 , Ca 5 Ag 2 Si 7 . The influence of the electron concentration factor on the stability of the different atomic arrangements is pointed out. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|