Patent ID: 6541136
Filing Date: 2003-04-01
Classification: H01L,Y10S

Abstract:
A superconducting structure comprising:a dielectric oxide substrate; a thin buffer layer of a yttrium-barium-copper oxide superconducting material having a thickness of from about 5 nanometers to about 50 nanometers thereon; and, a layer of a rare earth-barium-copper oxide superconducting film thereon said thin buffer layer of yttrium-barium-copper oxide superconducting material, said rare earth selected from the group consisting of samarium, gadolinium, ytterbium, erbium, neodymium, dysprosium, holmium, lutetium, a combination of more than one element from said rare earth group and a combination of one or more elements from said rare earth group with yttrium, said thin buffer layer of yttrium-barium-copper oxide superconducting material characterized as having chemical and structural compatibility with said dielectric oxide substrate and said rare earth-barium-copper oxide superconducting film, wherein combination of said thin buffer layer of a yttrium-barium-copper oxide superconducting material and rare earth-barium-copper oxide superconducting film on said dielectric substrate yields a higher transition temperature than the same rare earth-barium-copper oxide superconducting film on said dielectric substrate in the absence of said thin buffer layer.