Preparation and crystal structure of Sr2CuO2(CO3)

Y. Miyazaki, H. Yamane, T. Kajitani, T. Oku, K. Hiraga, Y. Morii, K. Fuchizaki, S. Funahashi, T. Hirai

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111 Citations (Scopus)

Abstract

Sr2CuO2(CO3) was prepared at 1273 K and 0.01 MPa CO2 partial pressure in a flowing gas of O2CO2 using a mixture of SrCO3 and CuO powders as a starting material. The compound has a tetragonal structure with lattice constants a = 7.8045(1), and c = 14.993(1) A ̊, and its space group is 14. The formula per unit cell is 8 Sr2CuO2(CO3), and measured and calculated densities are Dm = 4.71 g/cm3, and Dx = 4.81 g/cm3, respectively. The crystal structure was refined by Rietveld analysis on X-ray powder diffraction and neutron powder diffraction data. The final residuals (RF) were 4.31 and 4.27% for the X-ray and neutron data, respectively. The structure consists of deformed [CuO6] octahedrons and layers of ordered triangular CO3 groups. Sr atoms having eight near oxygen neighbors are between the [CuO6] octahedrons and the CO3 layers.

Original languageEnglish
Pages (from-to)434-440
Number of pages7
JournalPhysica C: Superconductivity and its applications
Volume191
Issue number3-4
DOIs
Publication statusPublished - 1992 Feb 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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