Synthesis and Rietveld refinement of skutterudite-related phase CoSn1.5Te1.5

Autor:	František Laufek, V. Goliáš, Jiří Navrátil
Rok vydání:	2008
Předmět:	Radiation Materials science Rietveld refinement Crystal structure engineering.material Condensed Matter Physics Crystallography Group (periodic table) Phase (matter) engineering General Materials Science Skutterudite Isostructural Symmetry (geometry) Instrumentation Powder diffraction
Zdroj:	Powder Diffraction. 23:15-19
ISSN:	1945-7413 0885-7156
DOI:	10.1154/1.2825306
Popis:	Crystal structure of the skutterudite-related phase has been refined by the Rietveld method from X-ray powder diffraction data. Refined crystallographic data for CoSn1.5Te1.5area=12.9063(2) Å,c=15.7837(3) Å,V=2276.89(4) Å3, space groupR3(No. 148),Z=24, andDx=7.50 g/cm3. The crystal structure of the title compound can be viewed as a modification of the skutterudite structure (CoAs3)—it is isostructural with CoGe1.5Te1.5and IrSn1.5Te1.5. In the structure of CoSn1.5Te1.5, the Sn and Te atoms exhibit long-range ordering, which results in lowering of the original cubic symmetry of the skutterudite structure to the trigonal one.
Databáze:	OpenAIRE
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