Bi2La4O9, a monoclinic phase in the system Bi2O3-La2O3
The binary system Bi2O3-La2O3with La2O3≥ 50 mole% has been investigated at 950-1000°C. The results revealed three compounds: Bi8La10O27, Bi2.4La3.6O9, and Bi2La4O9. Bi2.4La3.6O9has a rhombohedral subcell with hexagonal lattice parametersa= 3.96017(5) Å,c= 9.9691(2) Å, and space groupR3m. It is pro...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
1996
|
| In: |
Journal of solid state chemistry
Year: 1996, Volume: 124, Issue: 2, Pages: 300-304 |
| DOI: | 10.1006/jssc.1996.0240 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1006/jssc.1996.0240 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0022459696902406 
|
| Author Notes: | X.L. Chen, W. Eysel, J.Q. Li |
| Summary: | The binary system Bi2O3-La2O3with La2O3≥ 50 mole% has been investigated at 950-1000°C. The results revealed three compounds: Bi8La10O27, Bi2.4La3.6O9, and Bi2La4O9. Bi2.4La3.6O9has a rhombohedral subcell with hexagonal lattice parametersa= 3.96017(5) Å,c= 9.9691(2) Å, and space groupR3m. It is probably the same phase which was reported previously as Bi2La4O9(Refs. 5 and 6). Bi2La4O9has a monoclinic structure with the subcell lattice parametersa= 6.8290(3) Å,b= 3.9887(1) Å,c= 4.0524(1) Å and β = 125.094(3)° and subcell space groupC2/m. Its average structure has been determined by X-ray powder diffraction and refined by the Rietveld method. The average structure can be described as an oxygen deficient fluorite structure of the δ-Bi2O3type with La and Bi randomly distributed on the cation site. In addition, a superstructure has been observed by TEM. |
|---|---|
| Item Description: | Elektronische Reproduktion der Druck-Ausgabe 25. Mai 2002 Im Titel sind die Zahlen 2, 3, 4 und 9 tiefgestellt Gesehen am 13.12.2022 |
| Physical Description: | Online Resource |
| DOI: | 10.1006/jssc.1996.0240 |