OXIDE SUPERCONDUCTING THIN FILM, MANUFACTURING METHOD THEREOF, AND OXIDE SUPERCONDUCTING THIN FILM WIRE

摘要

PROBLEM TO BE SOLVED: To provide a technique that makes it possible to obtain an oxide superconducting thin film layer having superior superconducting characteristics by laminating oxide superconducting thin film layers formed using an MOD method.SOLUTION: An oxide superconducting thin film manufacturing method with which a REBCO-based oxide superconducting thin film is formed on a base material using an application thermal decomposition method, includes: a base material production step for producing a base material by forming an intermediate layer whose top layer is a CeOlayer, on a substrate; a step for forming a REBCO-based oxide superconducting thin film of the first layer on the base material by applying a raw material solution which is prepared by setting RE and a Ba amount at a ratio lower than a REBCO stoichiometric ratio (RE:Ba:Cu=1:2:3), drying the applied raw material solution, and performing calcination heat treatment and main baking heat treatment on the dried raw material solution; and a step for forming a REBCO-based oxide superconducting thin film of the second layer on the REBCO-based oxide superconducting thin film of the first layer by applying a raw material solution which is prepared by setting a Cu amount at a ratio lower than the REBCO stoichiometric ratio, drying the applied raw material solution, and performing calcination heat treatment and main baking heat treatment on the dried raw material solution.