A new high temperature superconductor: Ba2SmCu3O9−x

作者: F. García-Alvarado , E. Moran , M. Vallet , J.M. González-Calbet , M.A. Alario

DOI: 10.1016/0038-1098(87)90280-8

关键词: Inorganic chemistryInorganic compoundElectron diffractionOxideAnalytical chemistrySuperconductivityHigh-temperature superconductivityElectrical resistivity and conductivityPerovskite (structure)ChemistryX-ray crystallography

摘要: Abstract A new high temperature superconducting oxide Ba2SmCu3O9−x (x≈-2.0) has been synthesized and characterized by means of X-ray electron diffraction as a single phase with perovskite related structure (acx acx 3ac, ac=perovskite unit cell parameter). The D.C. transition occurs at Tc=96.5 K width (10–90%) 1.7 K. photoemission experiments reveal surface concentration Cu3+ cations 36%.

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