Method for producing oxide superconductor, oxide superconductor and substrate material for supporting precursor of the same
AssigneeOrigin Electric Company, Limited
InventorsMotohide Matsui, Masato Murakami
Life of this patent
Estimating the term…
Abstract
A method for producing an oxide superconductor by partially melting and solidifying the precursor of the oxide superconductor is a method wherein the precursor is placed on a substrate material containing pure metal or a compound which is meltable in the precursor when the precursor is in a partially molten state, and partially melting and solidifying the precursor in said state.
Claims16
A method for producing a rare earth oxide superconductor comprising:
- placing a precursor of a rare earth oxide superconductor on a substrate material containing pure metal or a compound which is meltable in the precursor when the precursor is partially molten, and producing the oxide superconductor by partial melting and solidifying the precursor in said state;
- wherein the substrate material contains one or more of pure metal of Ba or Cu;
- oxides, composite oxides, carbonates, sulfides, sulfates, chlorides, hydroxides and nitrates of Ba and Cu;
- and noble metals selected from Ag, Au, Pt, Pd and their oxides;
- but does not contain a rare earth element.
An RE-Ba—Cu—O based oxide superconductor, wherein RE represents a rare earth element, and where the oxide superconductor comprises a portion solidified after melting and exposed to the outside, wherein the solidified portion contains one of or both of Ba and Cu but does not contain a rare earth element and the solidified portion is generated from a molten reaction between a precursor of the RE-Ba—Cu—O superconductor and a substrate material which is used for supporting the precursor when the precursor is melted and solidified;
- wherein the substrate material contains one or more of a pure metal of Ba or Cu;
- oxides, composite oxides, carbonates, sulfides, sufates, chlorides, hydroxides and nitrates of Ba and Cu;
- and noble metals selected from Ag, Au, Pt and Pd and their oxides;
- but does not contain a rare earth element.
Dependencies are inferred from the claim text.