Crystal structure of the high-temperature superconductor La1.85Sr0.15CuO4 above and below Tc

Robert Joseph Cava, A. Santoro, D. W. Johnson, W. W. Rhodes

Research output: Contribution to journalArticlepeer-review

226 Scopus citations

Abstract

The crystal structure of La1.85Sr0.15CuO4 has been determined at 300, 60, and 10 K by neutron diffraction powder profile analysis. The structure is of the tetragonal K2NiF4 type at ambient temperature, but undergoes an orthorhombic distortion near 200 K which buckles the copper-oxygen planes. The crystal structure of the orthorhombic phase is not significantly different above and below Tc. The copper-oxygen coordination polyhedron changes shape in a subtle manner at the tetragonal-to-orthorhombic phase transition, but is unchanged at Tc.

Original languageEnglish (US)
Pages (from-to)6716-6720
Number of pages5
JournalPhysical Review B
Volume35
Issue number13
DOIs
StatePublished - Jan 1 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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