High Pressure Synthesis of the Cation-ordered Perovskite 3C1:2-Ba3NaRu2O9

Angel M. Arevalo-Lopez, Mark S. Senn, Lauren Skedd, J. Paul Attfield

Research output: Contribution to journalArticlepeer-review

Abstract

The new phase 3C1:2-Ba3NaRu2O9 was synthesized by heating the hexagonal perovskite 6H-Ba3NaRu2O9 at 900 °C under a pressure of 9 GPa. 3C1:2-Ba3NaRu2O9 adopts the 1:2 B site-ordered cubic perovskite type structure [space group Pequation imagem1, cell parameters a = 5.8068(3) and c = 7.0652(5) Å] but a significant cation inversion between Na and Ru sites is found. No magnetic ordering transition is observed down to 2 K and 3C1:2-Ba3NaRu2O9 displays Pauli paramagnetism indicative of a metallic oxide with strong electron-electron correlations.
Original languageEnglish
Pages (from-to)1164-1167
Number of pages4
Journal Journal of Inorganic and General Chemistry
Volume640
Issue number6
Early online date9 Jan 2014
DOIs
Publication statusPublished - 16 May 2014

Keywords

  • Cation-ordered perovskites
  • High pressure synthesis
  • Metallic oxides
  • Perovskite phases
  • Ruthenium

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