Magnetic and Electric Properties of RuSr2GdCu2O8
We have performed an experimental study of magnetic and magneto‐transport properties on a polycrystalline sample of RuSr2GdCu2O8. (Ru‐1212). Two peaks in the derivative of the resistive curves were identified in the temperature T1 = 43 K and T2 = 34 K at zero magnetic field. The magnetization presents an increase, at the same temperature T2 of the resistive curves, followed by a decrease at lower temperatures, which leads to the appearance of a peak in the magnetization versus temperature plots upon entering of superconducting state. We discuss how the anomalies observed in the magnetic and electric measurements could be originated by fault in the stoichiometric of Ru‐1212.