Phases in the system Ba2M2-xCuxO4+δ, M = In, Sc: Structure and Oxygen Stoichiometry

D. H. Gregory, M. T. Weller

研究成果: Contribution to journalArticle査読

53 被引用数 (Scopus)


Members of the series Ba2M2-x, Cux O4+δ, M = In, Sc (0 ≤ x ≤ 1), have been synthesised by solid-state reaction methods and products characterized by powder X-ray diffraction (PXD). Selected compounds have been annealed under oxygen at 1 atm and oxygen stoichiometries for unannealed and oxygen annealed samples have been calculated following thermogravimetric analysis (TGA). Structures for M = In, x = 0, 0.5, 1 and M = Sc, x = 1 were determined by Rietveld analysis of PXD data. Ba2In2O5 has been shown to crystallize in the orthorhombic space group Ibm2 (Brownmillerite structure) with a = 6.0956(1) Å, b = 16.7112(3) Å c = 5.9601(1) Å. The copper-containing phases adopt a tetragonal “doubled perovskite” structure built up of copper-substituted BaInO2.5 cubes. The copper coordination and oxidation state can be controlled by varying the oxygen level of the structure.

ジャーナルJournal of Solid State Chemistry
出版ステータス出版済み - 11 1993

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • 凝縮系物理学
  • 物理化学および理論化学
  • 無機化学
  • 材料化学


「Phases in the system Ba<sub>2</sub>M<sub>2-x</sub>Cu<sub>x</sub>O<sub>4+δ</sub>, M = In, Sc: Structure and Oxygen Stoichiometry」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。