. Hk, 74.72.Bk, 74.78.Bz We report structural and magnetic studies of Sr 2 FeMnO 6 (SFMO) as possible substrate material for the production of YBa 2 Cu 3 O 7-δ (YBCO) superconducting films. X-ray diffraction experiments show that SFMO belongs to the complex cubic perovskite family. Chemical stability and crystallographic coupling between SFMO and YBCO were examined by characterizing SFMO-YBCO (0 to 100 vol%) polycrystalline composites. Morphological and qualitative compositional analyses were performed through scanning electron microscopy and energy dispersive X-ray experiments. Magnetization measurements reveal that the proximity of SFMO does not affect the superconducting transition temperature (T c =89.2 K) of YBCO material. Our results evidenced that the SFMO is an excellent candidate to be substrate for the fabrication of YBCO superconducting thin films.
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