Superconductive articles including cerium oxide layer
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsXin D. Wu, Ross E. Muenchausen
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Abstract
A ceramic superconductor comprising a metal oxide substrate, a ceramic high temperature superconductive material, and a intermediate layer of a material having a cubic crystal structure, said layer situated between the substrate and the superconductive material is provided, and a structure for supporting a ceramic superconducting material is provided, said structure comprising a metal oxide substrate, and a layer situated over the surface of the substrate to substantially inhibit interdiffusion between the substrate and a ceramic superconducting material deposited upon said structure.
Claims19
A ceramic superconductor comprising:
- a metal oxide substrate;
- an epitaxially oriented ceramic high temperature superconductive material selected from the group consisting of yttrium-barium-copper oxide, bismuth-strontium-calcium-copper oxide, thallium-barium-calcium-copper oxide, neodymium-cerium-copper oxide and bismuth-potassium-barium oxide;
- and,
- an intermediate layer selected from the group consisting of cerium oxide, curium oxide, erbium oxide, europium oxide, iron oxide, gadolinium oxide, holmium oxide, indium oxide, lanthanum oxide, manganese oxide, lutetium oxide, neodymium oxide, praseodymium oxide, plutonium oxide, samarium oxide, terbium oxide, thallium oxide, thulium oxide, and ytterbium oxide, having an epitaxial orientation and situated between said substrate and said superconductive material.
A ceramic superconductor comprising:
- a substrate;
- a ceramic high temperature superconductive material selected from the group consisting of yttrium-barium-copper oxide, bismuth-strontium-calcium-copper oxide, thallium-barium-calcium-copper oxide, neodymium-cerium-copper oxide and bismuth-potassium-barium oxide;
- and,
- an intermediate layer selected from the group consisting of curium oxide, erbium oxide, europium oxide, gadolinium oxide, holmium oxide, manganese oxide, lutetium oxide, neodymium oxide, praseodymium oxide, plutonium oxide, samarium oxide, terbium oxide, thallium oxide, thulium oxide, and ytterbium oxide, situated between said substrate and said superconductive material.
A structure for supporting a ceramic superconducting material, which comprises:
- a metal oxide substrate;
- and,
- a layer selected from the group consisting of gadolinium oxide and praseodymium oxide situated over the surface of said substrate to substantially inhibit interdiffusion between said substrate and a subsequent ceramic superconducting material selected from the group consisting of yttrium-barium-copper oxide, bismuth-strontium-calcium-copper oxide, thallium-barium-calcium-copper oxide, neodymium-cerium-copper oxide and bismuth-potassium-barium oxide deposited upon said structure.
A structure for supporting a ceramic superconducting material, which comprises:
- a substrate;
- and,
- a layer selected from the group consisting of curium oxide, erbium oxide, europium oxide, gadolinium oxide, holmium oxide, indium, manganese oxide, lutetium oxide, neodymium oxide, praseodymium oxide, plutonium oxide, samarium oxide, terbium oxide, thallium oxide, thulium oxide, and ytterbium oxide, situated over the surface of said substrate to substantially inhibit interdiffusion between said substrate and a subsequent ceramic superconducting material deposited upon said structure.
In a high temperature superconductive device having one or more crossover junctions of ceramic high temperature superconductive material selected from the group consisting of yttrium-barium-copper oxide, bismuth-strontium-calcium-copper oxide, thallium-barium-calcium-copper oxide, neodymium-cerium-copper oxide and bismuth-potassium-barium oxide deposited upon said structure separated by an electrically insulating material, the improvement wherein said one or more crossover junctions of ceramic superconductive material is separated by a layer of material selected from the group consisting of cerium oxide, curium oxide, erbium oxide, europium oxide, iron oxide, gadolinium oxide, holmium oxide, indium oxide, lanthanum oxide, manganese oxide, lutetium oxide, neodymium oxide, praseodymium oxide, plutonium oxide, samarium oxide, terbium oxide, thallium oxide, thulium oxide, and ytterbium oxide.
Dependencies are inferred from the claim text.