PURPOSE: To improve the adhesion to a substrate, magnetism, and light-transmissive property of the title film by an easy practical method by applying the organic solvent solution of a soluble organic iron compound to the substrate and thermally decomposing the compound after the solution is dried and annealed.
CONSTITUTION: Any organic iron compounds can be used for manufacturing this light- transmissive magnetic iron oxide film when they are soluble in organic solvents and reaction products of such oxygen-bearing organic compounds as polyol, plycarboxylic acid, oxycarboxylic acid, etc., with an iron salt can be cited as the example of the compounds, but reaction products of 1,2-diol containing 10 or more carbon atoms or citric acid with an iron salt are preferable. No specific specification is set to the organic solvent when the solvent can solve the iron salt and organic compound, but lower alcohol, ketone, dioxane, and their mixed solvents having boiling points of 70-150°C are preferable. The magnetic iron oxide film is formed by drying the organic compound applied to a substrate and thermally decomposing the compound after annealing. It is desirable to apply the compound as an organic solvent solution having a fluidity so that the film can uniformly and homogeneously be formed.
KOJIMA KUNIHIKO
IMAMURA JUICHI
TOYO GOSEI KOGYO KK
| JPH01261235A | 1989-10-18 | |||
| JPS61136683A | 1986-06-24 | |||
| JPS5469594A | 1979-06-04 |