Abstract
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 language | English |
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Pages (from-to) | 3617-3621 |
Number of pages | 5 |
Journal | Physical Review B |
Volume | 36 |
Issue number | 7 |
DOIs | |
State | Published - 1987 |