Synthesis of Bi{sub 1.8}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} superconductor
Patent
·
OSTI ID:392650
Two-powder processes for the synthesis of superconducting (Bi, Pb)-2223/Ag-clad wires by the oxide-powder-in-the-robe are provided. The first precursor powder, of nominal stoichiometry CaCuO{sub x}, is a solution-synthesized mixture of Ca{sub 0.45}Cu{sub 0.55}O{sub 2} and CaO. Using these oxide precursor mixtures, superconducting tapes with well-aligned grains and reproducible critical current densities J{sub c} in the range of 20,000 to 26,000 A/cm{sup 2} at 75 K in self-field after annealing less than 200 hours were obtained. 2 figs.
- Research Organization:
- University of California
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- Los Alamos National Lab., NM (United States)
- Patent Number(s):
- US 5,569,641/A/
- Application Number:
- PAN: 8-419,485
- OSTI ID:
- 392650
- Country of Publication:
- United States
- Language:
- English
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