Preparation of yttrium barium copper oxide superconducting films by metalorganic molecular beam epitaxy
Review articleOpen access
Abstract:

AbstractWe have prepared yttrium barium copper oxide superconducting thin films on MgO(100) substrates by newly developed metalorganic molecular beam epitaxy. As source materials, we have used fluorine-free β-diketonate chelates of yttrium, barium and copper. The films annealed at 940°C had the c axis oriented normal to the substrate surface and exhibited superconducting properties with Tc (zero resistance) = 45 K.

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