Reinvestigation of the structure of BaCuSi2O6 – evidence for a phase transition at high temperature
- 15 September 2004
- journal article
- research article
- Published by International Union of Crystallography (IUCr) in Acta crystallographica Section B, Structural science, crystal engineering and materials
- Vol. 60 (5) , 491-495
- https://doi.org/10.1107/s0108768104011644
Abstract
Superstructure reflections have been observed in the room-temperature X-ray diffraction pattern of BaCuSi2O6, barium copper disilicate. The tetragonal structure has a fourfold unit-cell volume compared with the original structure determined by Finger et al. [(1989), Am. Mineral. 74, 952–955]. At T s = 610 K BaCuSi2O6 undergoes a structural phase transition upon which the superstructure reflections disappear. The description of the structure in the larger cell removes the crystal-chemical inconsistencies observed for the original structure.Keywords
This publication has 1 reference indexed in Scilit:
- Crystal structure refinement withSHELXLActa Crystallographica Section C Structural Chemistry, 2015