Nb Substitution Effects on Superconducting Properties of Ru1−xNbxSr2Eu1.4Ce0.6Cu2O10−δ
Figure 4
First derivative of the resistivity as a function of temperature for Ru1−xNbx-1222 (x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0). Also it is shown the deconvolution of the derivative curves into two Gaussian peaks corresponding to temperatures and .