Abstract
Electrochemical and high pressure oxygenation experiments are described which extend the range of intercalated oxygen content beyond that accessible in 1 atm O2 treatments for the triangular planar cuprate delafossites YCuO2+x and LaCuO2+x, with 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 YCuO2 through 1% Ca substitution for Y and oxidation conditions for obtaining the pure orthorhombic intercalated oxygen superlattice form of YCuO2.50 are also described. Temperature dependent resistivities for some of the superoxygenated compositions are reported; metallic behavior was not observed.
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Cava, R.J., Peck, W.F., Krajewski, J.J. et al. Electrochemical and high pressure superoxygenation of YCuO2+x and LaCuO2+x delafossites. Journal of Materials Research 9, 314–317 (1994). https://doi.org/10.1557/JMR.1994.0314
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DOI: https://doi.org/10.1557/JMR.1994.0314