Robust superconducting tapes based on Bi sub 2 Sr sub 2 Ca sub 2 Cu sub 3 O sub 10 minus. delta

Journal Article · Mon Nov 25 04:00:00 EST 1991 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.105844· OSTI ID:6380303

Li, Q; Ostenson, J E; Fang, M M; Finnemore, D K ^[1]

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1. Ames Laboratory, USDOE and Department of Physics, Iowa State University, Ames, Iowa (USA)

A rugged conductor based on the Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10{minus}{delta}} has been developed by dispersing Ag throughout the matrix on a micrometer scale. The Ag seems to effectively blunt crack tips and provides regions for plastic flow. The performance degrades relatively little with the strains of handling, soldering and quenching to 77 K. Tapes having a critical current density of 4,500 A/cm{sup 2} at 77 K and zero field will show over 20,000 A/cm{sup 2} at 4.2 K and zero field. At 20 T for the field perpendicular to the tape surface, these conductors show 2,800 A/cm{sup 2} at 4.2 K and 2,200 A/cm{sup 2} at 20 K. The critical current density falls roughly linearly with strain and decreases from about 22,000 A/cm{sup 2} at zero strain to about 10,000 A/cm{sup 2} at 1.0% bending strain.

• OSTI ID: 6380303
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 59:22; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
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CRITICAL CURRENT
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ELECTRIC CURRENTS
FABRICATION
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
SILVER ADDITIONS
SILVER ALLOYS
STRAINS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING WIRES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
WIRES