Journal article
Subsolidus phase relations of the SrO–WO3–CuO system at 800 °C in air
Nano-Microstructures in Materials, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
The subsolidus phase relations of the SrO–WO3–CuO system were investigated in air. The samples were equilibrated at 800 °C. Under these conditions, eight binary oxides are stable. The pseudo-ternary section contains two ternary oxide phases: the previously described Sr2CuWO6 phase as well as a new phase with Sr8CuW3O18 stoichiometry.
The crystal structure of this new compound was solved and refined in the R-3 space group, unit cell parameters a = 5.7202 Å and c = 28.873 Å. Sr8CuW3O18 has a distorted perovskite type structure, where some of the Sr atoms are positioned at the B sites, and the composition may be given as: Sr6(Sr2CuW3)O18.
There are indications of existence of a superstructure or stacking faults related to Cu/Sr ordering.
| Language: | English |
|---|---|
| Year: | 2012 |
| Pages: | 304-309 |
| ISSN: | 18734669 and 09258388 |
| Types: | Journal article |
| DOI: | 10.1016/j.jallcom.2011.09.104 |
| ORCIDs: | Grivel, Jean-Claude and Norby, Poul |
