Structural properties of Ba2RCu3O7 high-Tc superconductors

Y. Le Page, T. Siegrist, S. A. Sunshine, L. F. Schneemeyer, D. W. Murphy, S. M. Zahurak, J. V. Waszczak, W. R. McKinnon, J. M. Tarascon, G. W. Hull, L. H. Greene

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The crystal chemistry of several Ba2RCu3O7 high-Tc superconductors (R=Y,Pr,Sm,Eu,Gd,Dy,Ho,Er,Tm) has been studied by x-ray diffraction on twinned crystals. All samples except the Pr compound show superconductivity around 90 K. From the variation of the interatomic distances with different rare-earth ions, we infer the presence of a [CuO2-BaO-CuO--BaO-CuO2] building unit.

Original languageEnglish
Pages (from-to)3617-3621
Number of pages5
JournalPhysical Review B
Issue number7
StatePublished - 1987


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