The preparation and characterization of Ba3Te2O9; a new oxide structure

A. J. Jacobson, J. C. Scanlon, Kenneth R Poeppelmeier, J. M. Longo, D. E. Cox

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The structure of Ba3Te2O9 has been determined from x-ray powder diffraction data and by profile refinement of neutron diffraction data. We find tellurium octahedrally coordinated as expected and the same face-shared [B2O9]6- unit as observed in Ba3W2O9. The phase Ba3Te2O9 has, however, a Cs3Fe2F9 type structure ( P63 mmc, a=5.8603(1) A ̊, c=14.3037(6) A ̊) rather than the Cs3Tl2Cl9 structure (R3c) found for the tungsten analogue. The two oxide structures have the same BaO3 layer sequence but differ only in the spatial arrangement of the [B2O9] groups in the lattice. Infrared and Raman spectra confirm the different site symmetries associated with the different packing of the tungstate and tellurate anions in their respective structures.

Original languageEnglish
Pages (from-to)359-367
Number of pages9
JournalMaterials Research Bulletin
Volume16
Issue number4
DOIs
Publication statusPublished - 1981

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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