Synthesis of the RuSr 2 GdCu 2 O 8± z Compound at Ambient Pressure Through a Solid State Reaction, Melts and Sol-Gel by Acrylamide Polymerization Methods

The RuSr 2 GdCu 2 O 8± z (Ru-1:2:1:2) compound, was synthesized at ambient pressure by solid-state reaction, melts, and sol-gel by acrylamide polymerization methods with the following intervals of temperature reaction: T = 960–1015°C, T =1450°C, 135–980°C respectively. Differential Thermal Analysis (DTA) result gave us an idea about the temperature interval where the Ru-1:2:1:2 compound was formed. Results of X-Ray powder Diffraction (XRD) data show the formation of the Ru-1:2:1:2 phase, which crystallizes in a tetragonal structure with a space group P 4/ mmm . The synthesis of the Ru-1:2:1:2 compound by the melts route was found to be faster than the other synthesis methods. Studies by the Scanning Electron Microscopy (SEM) technique gives a particle size around 1–6 μm. The chemical compositions of the samples were obtained by Energy Dispersive X-ray (EDX) spectroscopy. The resistance vs. temperature data of the samples annealed in oxygen flux for 6, 12, 41 and 64 h, at T =960°C, shows a semiconductor behavior.