New layered copper oxide superconductor compounds.

摘要

The superconductive compounds are oxides of the general formula RExAEx+2Cux+3O7-y , wherein RE is a rare earth metal or a rare earth-like metal, AE is a member of the group of alkaline earth metals or a combination of at least two members of that group, and wherein x = 2, 3, 4 and y </= 1. The compounds have a perovskite-like structure with corner-sharing octahedral layers of copper oxide (CuO6) being interlinked by two corner-sharing square-planar copper oxide (CuO4) units.