Structural and magnetic characterization of manganite-like Sr2FeMnO6 as substrate for YBa2Cu3O7-δ films

We report structural and magnetic studies of Sr2FeMnO6 (SFMO) as possible substrate material for the production of YBa2Cu3O7-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 (Tc=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. (copyright 2005 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)