Abstract:In this paper, the synthesis of the La 3 Ba 5 Cu 8 O 18-δ and Sm 3 Ba 5 Cu 8 O 18-δ superconductors using the combustion method is reported for the first time. Besides, a comparison with the solid-state reaction method was performed. The materials were synthesized at 870 °C for 24 h under oxygen flow. Rietveld refinement showed materials with the main crystal phase corresponding to the orthorhombic structure of space-group Pmm2 (25), with purity in the range 51-85%, which had not reported for the RE358 systems… Show more
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