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Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/1962

Title: Structural studies of the aeschynite-euxenite transformation in the series Ln(TiTa)O6 Ln = Lanthanide.
Authors: Thorogood, GJ
Avdeev, M
Kennedy, BJ
Keywords: Rare Earths
Thorium Minerals
Oxide Minerals
Uranium Minerals
Transformations
Microstructure
Issue Date: Jul-2010
Publisher: Elsevier
Citation: Thorogood, G. J., Avdeev, M., & Kennedy, B. J. (2010). Structural studies of the aeschynite-euxenite transformation in the series Ln(TiTa)O6 Ln = Lanthanide. Solid State Sciences, 12(7), 1263-1269.
Abstract: Ceramics based on LnTiTaO6 (Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) were prepared using a conventional solid-state ceramic route. The structure and microstructure of the samples were analyzed using scanning electron microscopy, synchrotron X-ray powder diffraction and neutron diffraction techniques. The unit cell volume of the ceramics decreased with a decrease in ionic radius of the rare-earth ions until a phase change was seen at Ho where the space group changed from Pnma to Pbcn. The results confirmed that the boundary of the aeschynite to euxenite phase change that lies between DyTiTaO6 and HoTiTaO6 and demonstrate that this is a result of distortion of the channels in the aeschynite structure. © 2010, Elsevier Ltd.
URI: http://dx.doi.org/10.1016/j.solidstatesciences.2010.02.036
http://apo.ansto.gov.au/dspace/handle/10238/1962
ISSN: 1293-2558
Appears in Collections:Journal Articles

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