National Institute of Advanced Industrial Science and Technology

Agency of Industrial Science and Technology

Director-general of Agency of Industrial Science and Technology

Iwao Yamaguchi

Toshiya Kumagai

Takaaki Manabe

Susumu Mizuta

Tetsuo Tsuchiya

Akira Yabe

Tomohiko Nakajima

Mitsugu Sohma

Akio Watanabe

Hiroyuki Niino

Wakichi Kondo

Kenichi Tsukada

Wakichi Kondou

Susumu Nakamura

Yoji Imai

Tsuyoshi Terayama

Tadao Shimizu

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.

Solution for forming rare-earth superconductive film and production method thereof

A metal complex composition containing complexes having metal species of a rare earth element, barium and copper and ligands of a trifluoroacetic acid or pentafluoropropionic acid ligand, a pyridine ligand and an acetylacetone ligand. A superconductive film may be obtained by applying an organic solvent solution of the above metal complex composition to a substrate and by heat treating the coating.

Rare earth-Ba-Cu complex composition and method of producing superconductor using same

There is disclosed a method for producing a metal oxide, which comprises the steps of: dissolving a metal organic compound (e.g. a metal organic acid salt, a metal acetylacetonato complex, and a metal alkoxide having an organic group with 6 or more carbon atoms) in a solvent to provide a state of solution, applying the solution onto a substrate, drying the solution, and subjecting the resultant substrate to irradiation with a laser light of a 400 nm or less wavelength, to form a metal oxide on the substrate. According to that method, a metal oxide can be produced without applying a heat treatment at a high temperature of the degree adopted in the conventionally known application thermal decomposition method.

Method for producing a metal oxide and method for forming a minute pattern

A process for forming a dense, epitaxial metal oxide film on a single crystal substrate, including cleaning the surface of the single crystal substrate, contacting the cleaned surface with a polar organic compound such as a small molecular weight alcohol, so that the cleaned surface adsorbs the polar organic compound, then applying a hydrocarbon solvent solution containing at least one organic group-containing metal compound on the polar organic compound-adsorbed surface, and then heating the substrate to decompose the organic group-containing metal compound and to form a dense epitaxial metal oxide film on the substrate.

Method for preparing dense, epitaxial metal oxide film

Growing community of inventors

Tsukuba, Japan

Iwao Yamaguchi