Phase equilibria in systems Ce-M-Sb (M=Si, Ge, Sn) and superstructure Ce12Ge9-xSb23+x (x=3.8±0.1)
- Autor(en)
- Andrij Grytsiv, Peter Franz Rogl, Adriana Saccone, Gerald Giester
- Abstrakt
Phase relations in the ternary systems Ce-M-Sb (M=Si, Ge, Sn) in composition regions CeSb2-Sb-M were studied by optical and electron microscopy, X-ray diffraction, and electron probe microanalysis on arc-melted alloys and specimens annealed in the temperature region from 850 to 200 °C. The results, in combination with an assessment of all literature data available, were used to construct solidus surfaces and a series of isothermal sections. No ternary compounds were found to form in the Ce-Si-Sb system whilst Ce12Ge9-xSb23+x (3.3 <x <4.2) and CeSnxSb2 (0.1 <x <0.8) participate in phase equilibria in the composition region investigated. Crystallographic parameters for the ternary compound Ce12Ge9-xSb23+x (x=3.8±0.1) were determined from X-ray single crystal and powder diffraction. For the binary system Ge-Sb a eutectic was defined L(Ge)+(Sb) at 591.6 °C and 22.5 at%. Ge EPMA revealed a maximal solubility of 6.3 at% Ge in (Sb) at the eutectic temperature.
- Organisation(en)
- Institut für Physikalische Chemie, Institut für Mineralogie und Kristallographie
- Externe Organisation(en)
- Università degli Studi di Genova
- Journal
- Journal of Solid State Chemistry
- Band
- 182
- Seiten
- 645-656
- Anzahl der Seiten
- 12
- ISSN
- 0022-4596
- Publikationsdatum
- 2009
- Peer-reviewed
- Ja
- ÖFOS 2012
- 105113 Kristallographie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/00e8568d-52a9-45d8-a694-1db2c446c76d