Abstract
During the investigation of the system Bi−Sr−Cu−O a novel family of superconducting oxides, close to the composition Sr2Bi2Cu2O7+δ has been isolated, with a midpoint critical temperature ranging from 7 K to 22 K. The X-ray diffraction and high-resolution electron microscopy studies have shown its relationships with perovskite and demonstrated its bidimensional character. The possible relationships of this lamellar oxide with Aurivillius phases is discussed.
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Michel, C., Hervieu, M., Borel, M.M. et al. Superconductivity in the Bi - Sr - Cu - O system. Z. Physik B - Condensed Matter 68, 421–423 (1987). https://doi.org/10.1007/BF01471071
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DOI: https://doi.org/10.1007/BF01471071