Synthesis of Bi.sub.1.8 Pb.sub.0.4 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x superconductor

Patent · Mon Jan 01 00:00:00 EST 1996

OSTI ID:870665

Smith, Michael G ^[1]

---

1. Los Alamos, NM

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: University of California (); Los Alamos National Laboratory ()
• Patent Number(s): US 5569641
• OSTI ID: 870665
• Country of Publication: United States
• Language: English

Related Subjects

synthesis
pb
sr
cu
superconductor
two-powder
processes
superconducting
-2223
ag-clad
wires
oxide-powder-in-the-robe
provided
precursor
powder
nominal
stoichiometry
cacuo
solution-synthesized
mixture
45
55
cao
oxide
mixtures
tapes
well-aligned
grains
reproducible
critical
current
densities
range
20
000
26
cm
75
self-field
annealing
200
hours
obtained
precursor mixture
current densities
critical current
precursor powder
precursor mixtures
oxide precursor
superconducting tape
/505/252/423/