Electrochemical and High Pressure Superoxygenation of YCuO2+Xand LaCuO2+xDelafossites

R. J. Cava, M. G. Peck, J. J. Krajewski, S. W. Cheong, H. Y. Hwang

Research output: Contribution to journalArticle

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Abstract

Electrochemical and high pressure oxygenation experiments are described which extend the range of intercalated oxygen content beyond that accessible in 1 atm O2treatments for the triangular planar cuprate delafossites YCuO2+xand LaCuO2+xwith the intention of increasing the hole doping, and filling vacancies in the intercalated oxygen lattice to decrease electrical resistivities. Stabilization of the 2H polytype of YCuO2through 1% Ca substitution for Y and oxidation conditions for obtaining the pure orthorhombic intercalated oxygen superlattice form of YCuO2.50are also described. Temperature dependent resistivities for some of the superoxygenated compositions are reported; metallic behavior was not observed.

Original languageEnglish (US)
Pages (from-to)314-317
Number of pages4
JournalJournal of Materials Research
Volume9
Issue number2
DOIs
StatePublished - Oct 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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