ANSTO Publications Online: Structural studies of the phases in Ba2LaIrO6

Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/2772

Title:	Structural studies of the phases in Ba2LaIrO6 - new light on an old problem.
Authors:	Zhou, Q Kennedy, BJ Avdeev, M Giachini, L Kimpton, JA
Keywords:	Perovskites Phase Transformations X-Ray Diffraction Iridium Oxides Structural Models Temperature Range
Issue Date:	Nov-2009
Publisher:	Elsevier
Citation:	Zhou, Q., Kennedy, B. J., Avdeev, M., Giachini, L., & Kimpton, J. A. (2009). Structural studies of the phases in Ba2LaIrO6 - new light on an old problem. Journal of Solid State Chemistry, 182(11), 3195-3200.
Abstract:	Accurate and precise structures for the cation-ordered double perovskite Ba2LaIrO6 at a number of temperatures are presented. Careful analysis of the synchrotron X-ray and neutron diffraction profiles of Ba2LaIrO6 suggests that, at room temperature, this is monoclinic in space group I2/m. Heating the sample to 375 K results in a transition to a rhombohedral phase in R3¯ with further heating resulting in the loss of the tilting of the octahedra, the structure being in Fm3¯m. Cooling the sample induces an additional phase transition to a triclinic structure in I1¯. Details of the various structures are presented. © 2009, Elsevier Ltd.
URI:	http://dx.doi.org/10.1016/j.jssc.2009.08.026 http://apo.ansto.gov.au/dspace/handle/10238/2772
ISSN:	0022-4596
Appears in Collections:	Journal Articles

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