Abstract
The previously unknown crystal structure of sodium strontium vanadate, NaSrVO\(_4\), is determined and refined from laboratory X-ray powder diffraction data. The title compound exhibits the larnite \(\beta\text{-}\textrm{Ca}_2\textrm{SiO}_4\) structure. This is the first report of such chemistry \(\textrm{A}^{I}\textrm{B}^{II}\textrm{XO}_{4}\), which exhibits this structural type. \(\textrm{NaSrVO}_4\) exhibits 2 first-order-phase transitions above room temperature towards, respectively, an orthorhombic phase and an \(\alpha\text{-}\textrm{Ca}_2\textrm{SiO}_4\) hexagonal-related structure.
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Acknowledgements
The authors acknowledge Prof. M. Nespolo from Nancy University for his help in running CHARDI2015. We thank Dr. Sophie Benjamin from Nottingham Trent University for making available their PANalytical MPD Cu–K\(_{\alpha 1}\) diffractometer equipped with HTK1200N chamber to carry out some additional high-temperature experiment. Finally, the authors thank the two anonymous referees for their valuable comments which helped to improve the manuscript.
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Nénert, G., O’Meara, P. & Degen, T. Crystal structure and polymorphism of NaSrVO4: the first AIBIIXVO4 larnite-related structure from X-ray powder diffraction data. Phys Chem Minerals 44, 455–463 (2017). https://doi.org/10.1007/s00269-017-0873-6
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DOI: https://doi.org/10.1007/s00269-017-0873-6