THEEu1+xBa2-xCu3OySYSTEM: NON-STOICHIOMETRY AND ELECTRICAL CONDUCTIVITY AT HIGH AND LOW TEMPERATURE

Abstract

We present here non-stoichiometry and electrical conductivity measurements in the low-T and high-T range for the Eu1+xBa2-xCu3Oysystem with x=0, 0.2 and 0.4. We found an anomalous trend of the Tcwith y for EuBa2Cu3Oy(Eu-123) relative to other HTSC of REBa2Cu3Oyfamily (RE=Y, Nd, Sm). On the contrary high-T data for the whole system show a behavior similar to that of others RE-123.