Abstract
We have studied the superconducting transitions of Y1Ba2Cu3D x O7−x−δ samples where O has been replaced by D=F, S, or Cl andx=0.2-2. No single phase compounds were obtained forx>0.2. No dramatic increase inT c was registered. Generally the results can be interpreted as a dilution of the highT c “1 2 3” phase by other phases as the dopant concentration increases, ultimately suppressingT c completely. Possibly there is an increase ofT c for an intermediate dopant range,x, in the Cl series.
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Yi, L.Z., Persson, M. & Eriksson, S. Study of the effect of the substitution of O by F, S, and Cl on the superconductivity of Y1Ba2Cu3O7−δ . Z. Physik B - Condensed Matter 74, 423–428 (1989). https://doi.org/10.1007/BF01311389
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DOI: https://doi.org/10.1007/BF01311389