Nb Substitution Effects on Superconducting Properties of Ru_1−xNb_xSr₂Eu_1.4Ce_0.6Cu₂O_10−δ

Figure 1

XRD patterns of the Ru_1−xNb_xSr₂Eu_1.4Ce_0.6Cu₂O_10−δ system (x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0).