The system Ce-Zn-B at 800 degrees C
- Autor(en)
- Oksana Solohub, Gerald Giester, Peter Franz Rogl
- Abstrakt
The isothermal section for the system Ce-Zn-B has been established at 800 degrees C using electron microprobe analysis and X-ray powder diffraction. No ternary compounds exist and mutual solid solubilities of binary phases are negligible. In the concentration range of 10.0-10.5 at% Ce two structural modifications have been confirmed: high temperature beta Ce(2)Zn(17) above similar to 750 degrees C with the Th(2)Zn(17) type (R (3) over barm, a=0.90916(4) nm, c=1.3286(1)nm) and low temperature alpha CeZn(7) (Ce(1-x)Zn(5+2x): x similar to 0.33) up to 750 degrees C for which we attributed the TbCu(7) type (P6/mmm, a=0.52424(2), c=0.44274(1) nm). The crystal structure of CeZn(7) was derived from the Rietveld refinement of X-ray powder intensities. Precise data on atom site distribution and positional parameters have been furthermore provided from X-ray single crystal refinements for two compounds, for which crystal structures hitherto have only been derived from X-ray diffraction photographs: Ce(3)Zn(11) (Immm, a=0.45242(2)nm, b=0.88942(3)nm, c=1.34754(4)nm) and Ce(3)Zn(22) (14(1)/amd; a=0.89363(2)nm, c=2.1804(5) nm).
- Organisation(en)
- Institut für Physikalische Chemie, Institut für Mineralogie und Kristallographie
- Journal
- Journal of Solid State Chemistry
- Band
- 184
- Seiten
- 2840-2848
- Anzahl der Seiten
- 9
- ISSN
- 0022-4596
- DOI
- https://doi.org/10.1016/j.jssc.2011.08.020
- Publikationsdatum
- 2011
- Peer-reviewed
- Ja
- ÖFOS 2012
- 104017 Physikalische Chemie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/6013aab4-170f-47a0-9233-21b055294ca4