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

Smith, M G

Title: Synthesis of Bi{sub 1.8}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} superconductor

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Abstract

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.

Inventors:: Smith, M G

Issue Date:: 1996-10-29

Research Org.:: Univ. of California (United States)

OSTI Identifier:: 392650

Patent Number(s):: 5569641

Application Number:: PAN: 8-419,485; TRN: 96:028500

Assignee:: Los Alamos National Lab., NM (United States)

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Resource Relation:: Other Information: PBD: 29 Oct 1996

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; BISMUTH OXIDES; SYNTHESIS; CRITICAL CURRENT; LEAD OXIDES; STRONTIUM OXIDES; CALCIUM OXIDES; COPPER OXIDES; SUPERCONDUCTING COMPOSITES; SILVER; HIGH-TC SUPERCONDUCTORS; GRAIN ORIENTATION; TRANSITION TEMPERATURE

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                    Smith, M G. Synthesis of Bi{sub 1.8}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} superconductor.  United States: N. p., 1996. 
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                    Smith, M G. Synthesis of Bi{sub 1.8}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} superconductor.  United States.

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                    Smith, M G. Tue .  
        "Synthesis of Bi{sub 1.8}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} superconductor".  United States.

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@article{osti_392650,

  title        = {Synthesis of Bi{sub 1.8}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} superconductor},

  author       = {Smith, M G},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1996},

  month        = {10}

}

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