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US 4,959,347 AGranted
Forming homogeneous precursers of Bi-Sr-Ca-Cu via carboxylates in the presence of oxidizing agents
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsToshio Kobayashi, Fusaoki Uchikawa, Kenji Nomura
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Abstract
A process for producing a superconductor of an oxide system, which comprises uniformly dissolving, dispersing or suspending in a solvent metal elements for constituting the oxide system at least partly in the form of carboxylates with the rest, if any, being in the form of alkoxides, acetylacetonates and/or inorganic compounds, followed by removal of the solvent to obtain a homogeneous mixture, and sintering the mixture.
Claims12
A process for producing a superconductor of an oxide system containing metal elements in accordance with the formula:
- Bi.sub.1 Sr.sub.0.5-3 Ca.sub.0.5-3 Cu.sub.0.5-3.5
- which process comprises:
- (a) uniformly dissolving, dispersing or suspending metal elements for constituting the oxide system in a solvent at least partly in the form of carboxylates, and in the presence of an oxidizing agent selected from the group consisting of hydrogen peroxide, benzoyl peroxide, peracetic acid, perbenzoic acid, ozone and m-chloroperbenzoic acid;
- and
- (b) removing the solvent to obtain a homogenous mixture, and sintering the mixture in an oxygen atmosphere.
2 more elements
Dependencies are inferred from the claim text.