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Synthesis and structure of a new perovskite, SrCuO 2.5

Publication ,  Journal Article
Chen, BH; Walker, D; Scott, BA; Mitzi, DB
Published in: Journal of Solid State Chemistry
February 1, 1996

A new oxygen-deficient perovskite, SrCuO 2.5 , was prepared at 950°C and 100 kbar pressure in a multianvil apparatus. Rietveld profile analysis, using X-ray powder diffraction data, was employed for the structural determination. SrCuO 2.5 is orthorhombic, Pbam (No. 55), Z = 4, a = 5.424(2) Å, b = 10.837(4) Å, and c = 3.731(1) Å, which is related to the perovskite subcell by √2a p × 2√2a p × a p , where a p is the simple cubic perovskite lattice parameter. It consists of corner-shared CuO 5 square pyramids with oxygen vacancy ordering in the CuO 2 layers. The ordered oxygen vacancies create parallel pseudo-hexagonal tunnels where the Sr atoms reside, forming SrO 10 polyhedra. Structural features with respect to oxygen vacancies, superstructures, and distortions are analogous to the type of ordering observed in Sr 2 CuO 3+δ . Superconductivity was not observed in SrCuO 2.5 down to 5 K. © 1996 Academic Press, Inc.

Duke Scholars

Published In

Journal of Solid State Chemistry

DOI

ISSN

0022-4596

Publication Date

February 1, 1996

Volume

121

Issue

2

Start / End Page

498 / 501

Related Subject Headings

  • Inorganic & Nuclear Chemistry
  • 3403 Macromolecular and materials chemistry
  • 3402 Inorganic chemistry
  • 0306 Physical Chemistry (incl. Structural)
  • 0303 Macromolecular and Materials Chemistry
  • 0302 Inorganic Chemistry
 

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Chen, B. H., Walker, D., Scott, B. A., & Mitzi, D. B. (1996). Synthesis and structure of a new perovskite, SrCuO 2.5. Journal of Solid State Chemistry, 121(2), 498–501. https://doi.org/10.1006/jssc.1996.0070
Chen, B. H., D. Walker, B. A. Scott, and D. B. Mitzi. “Synthesis and structure of a new perovskite, SrCuO 2.5.” Journal of Solid State Chemistry 121, no. 2 (February 1, 1996): 498–501. https://doi.org/10.1006/jssc.1996.0070.
Chen BH, Walker D, Scott BA, Mitzi DB. Synthesis and structure of a new perovskite, SrCuO 2.5. Journal of Solid State Chemistry. 1996 Feb 1;121(2):498–501.
Chen, B. H., et al. “Synthesis and structure of a new perovskite, SrCuO 2.5.” Journal of Solid State Chemistry, vol. 121, no. 2, Feb. 1996, pp. 498–501. Scopus, doi:10.1006/jssc.1996.0070.
Chen BH, Walker D, Scott BA, Mitzi DB. Synthesis and structure of a new perovskite, SrCuO 2.5. Journal of Solid State Chemistry. 1996 Feb 1;121(2):498–501.
Journal cover image

Published In

Journal of Solid State Chemistry

DOI

ISSN

0022-4596

Publication Date

February 1, 1996

Volume

121

Issue

2

Start / End Page

498 / 501

Related Subject Headings

  • Inorganic & Nuclear Chemistry
  • 3403 Macromolecular and materials chemistry
  • 3402 Inorganic chemistry
  • 0306 Physical Chemistry (incl. Structural)
  • 0303 Macromolecular and Materials Chemistry
  • 0302 Inorganic Chemistry