Pseudo-Symmetry in Tungsten Bronze Type Sr3TiNb4O15
The structure of Sr3TiNb4O15 has been re-investigated using synchrotron X-ray powder diffraction data. Rietveld refinements of a structural model against these data were performed and confirmed a new unit cell and space group symmetry. Sr3TiNb4O15 was found to possess Pna21 symmetry with a unit cell a=12.36081(2) Å, b=12.40288(2) Å, c=7.751270(10) Å.
KeywordsSuperstructure Reflection Orthorhombic Crystal System Room Temperature Structure Conventional Solid State Synthesis Doubled Unit Cell
A part of this work was carried out on the powder diffraction beamline at the Australian Synchrotron, Victoria, Australia, and the authors would like to thank Dr. Qinfen Gu for his assistance. The authors would also like to thank AINSE Ltd for providing financial assistance through the postgraduate award scheme.
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