Synthesis and transport properties of Ca3Cu2O4Cl2

J. G. Lee, K. V. Ramanujachary, M. Greenblatt

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Abstract

Synthesis, electrical, and magnetic properties of semiconducting Ca3Cu2O4Cl2 with a perovskite-related structure are reported. Synthetic conditions required for the formation of single phase polycrystalline Ca3Cu2O4Cl2 were determined. Powder X-ray diffraction analysis confirmed the body-centered-tetragonal ( I4 mmm) structure as proposed earlier. Differential thermal studies in air indicate incongruent melting at 960°C. Temperature dependent electrical resistivity measurements carried out in O2 and He atmospheres respectively in the range 20 - 600°C show semiconducting behavior regardless of the atmosphere, although the conductivity is higher by at least two orders of magnitude in oxygen atmosphere. No evidence for magnetic order is seen in the susceptibility measurements down to 2 K.

Original languageEnglish (US)
Pages (from-to)1027-1034
Number of pages8
JournalMaterials Research Bulletin
Volume26
Issue number10
DOIs
StatePublished - Oct 1991
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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