Loading patent…
AssigneeNational Institute of Advanced Industrial Science and Technology
InventorsTakaaki Manabe, Iwao Yamaguchi, Toshiya Kumagai, Mitsugu Sohma, Wakichi Kondou, Kenichi Tsukada
Estimating the term…
Provided is a coating solution where, upon producing a rare-earth superconductive composite metal oxide film by means of a coating-pyrolysis method, cracks are not generated in the heat treatment process for eliminating organic components, even when the thickness of the rare-earth superconductive film produced in a single coating is 500 nm or more, and without having to repeat the coating and annealing process. A solution for producing a rare-earth superconductive film which is made into a homogeneous solution by dissolving, in a solvent formed by adding a polyhydric alcohol to a univalent linear alcohol having a carbon number of 1 to 8 and/or water, a metal complex coordinated, relative to metal ions of a metallic species containing rare-earth elements, barium and copper, with pyridine and/or at least one type of tertiary amine, at least one type of carboxylic acid having a carbon number of 1 to 8, and, as needed, an acetylacetonato group.
A solution for producing a rare-earth superconductive film, wherein the solution is made into a homogeneous solution by dissolving, in a solvent formed by adding a polyhydric alcohol to a univalent linear alcohol having a carbon number of 1 to 8 and water, a metal complex coordinated, relative to metal ions of a metallic species containing rare-earth elements, barium and copper, with pyridine and/or at least one type of tertiary amine, at least one type of carboxylic acid group having a carbon number of 1 to 8, and, as needed, an acetylacetonato group.
A method of producing a solution for producing a rare-earth superconductive film, wherein pyridine and/or at least one type of tertiary amine, and at least one type of carboxylic acid having a carbon number of 1 to 8 are added to metal carboxylate having a carbon number of 1 to 8 and/or metal acetylacetonate powder mixture of a metallic species containing rare-earth elements, barium and copper to produce a metal complex, excessive solvent is evaporated, the product is dissolved in a univalent linear alcohol having a carbon number of 1 to 8 and water, and a polyhydric alcohol is additionally added to obtain a homogeneous solution.
Dependencies are inferred from the claim text.