La2CuSnO6: A new perovskite-related compound with an unusual arrangement of B cations

Mark T. Anderson, Kenneth R Poeppelmeier

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Abstract

The structure of La2CuSnO6 was determined by Rietveld refinement of time-of-flight powder neutron diffraction data. The structure was solved in space group P21/m with unit-cell parameters a = 8.510 (1), b = 7.815 (1), c = 7.817 (1) Å, and β= 91.15 (1)°. The structure is best described as a 2ap × 2ap × 2ap distorted perovskite with an unusual arrangement of B cations that produces distinct copper-oxygen and tin-oxygen layers. The structural aspects are similar to the high-temperature cuprate superconductors. The magnetic susceptibility versus temperature profile indicates the compound is not a superconductor above 5 K. The phase diagram of the LaO1.5-CuO-SnO2 system was determined at 980 °C in air. La2CuSnO6 is the only ternary compound in the system.

Original languageEnglish
Pages (from-to)476-482
Number of pages7
JournalChemistry of Materials
Volume3
Issue number3
Publication statusPublished - 1991

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ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

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