The crystal structure of the ordered double perovskite Ba 2PrRu0.8Ir0.2O6 was investigated as a function of pressure at room temperature. High-resolution synchrotron powder diffraction measurements have revealed the occurrence of a first order phase transition at a critical pressure of about 0.5 GPa. Structural refinements indicate that Ba2PrRu0.8Ir0.2O6 transforms from an ambient pressure monoclinic (P21/n) to a high-pressure tetragonal (P4/mnc) structure. The transition is consistent with a valence change of the Pr ions.
|Number of pages||7|
|Journal||Journal of Physics Condensed Matter|
|Publication status||Published - 2004 May 12|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics