Method of Making Substantially Single Phase Superconducting Oxide Ceramics Having a TC Above 85 Degrees.
Patent, Filed 19 Sep 90, patented 21 Apr 92,
DEPARTMENT OF THE NAVY WASHINGTON DC
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A substantially single phase superconducting composition is formed from a of 123 molar ratio of fine powders of a superconducting rare earth oxide, CuO, and BaCO3. The mixed powders and shaped articles formed from the mixed powders are calcined, sintered, and cooled in an oxygen containing atmosphere. The cooling step is done slowly to convert the sample to the orthorhombic structure and to improve the superconducting properties. The article formed is a substantially single phase superconducting composition.
- Ceramics, Refractories and Glass
- Electricity and Magnetism
- Inorganic Chemistry