Despite the discovery of new superconductors classes, high-Tc oxides continue to be a current topic, because of their complex phase diagrams and doping-dependant effects (allowing one to investigate the interaction between orbitals), as well as structural properties such as lattice distortion and charge ordering, among many others. Ruthenocuprates are magnetic superconductors in which the magnetic transition temperature is much higher than the critical superconducting temperature, making them unique compounds.With the aim of investigating the dilution of the magnetic Ru sub-lattice, we proposed the synthesis of the new Ru 1−x Re x Sr 2 GdCu 2 O y ruthenocupratetype family, adapting the known two-step process (double perovskite + CuO)