Superconductivity at 28 K in a cuprate with a niobium oxide intermediary layer

R. J. Cava, J. J. Krajewski, H. Takagi, H. W. Zandbergen, R. B. Van Dover, W. F. Peck, B. Hessen

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Abstract

A new copper oxide based superconductor is reported based on the ordered interleaving of NbO6 or TaO6 octahedra between the apices of copper oxide pyramids. Good bulk superconductivity is observed for only a narrow range of temperatures, annealing times and cooling rates. The relatively low Tc of the prototype compound Sr2Nd1.5Ce0.5NbCu2O10-δ, may be due to the presence of the insulating NbO6 layers or the wide (Nd, Ce)2O2 layers which separate the CuO2 planes.

Original languageEnglish (US)
Pages (from-to)237-242
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume191
Issue number1-2
DOIs
StatePublished - Feb 1 1992
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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    Cava, R. J., Krajewski, J. J., Takagi, H., Zandbergen, H. W., Van Dover, R. B., Peck, W. F., & Hessen, B. (1992). Superconductivity at 28 K in a cuprate with a niobium oxide intermediary layer. Physica C: Superconductivity and its applications, 191(1-2), 237-242. https://doi.org/10.1016/0921-4534(92)90653-T