Microfilamentary conductor based on Bi(2212)

Conference · Fri Mar 01 04:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5931989

Miller, T A; Schwartzkopf, L A; Ostenson, J E; Finnemore, D K ^[1]; Righi, J; Gleixner, R A; Zeigler, D ^[2]

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1. Iowa State Univ. of Science and Technology, Ames, IA (United States). Dept. of Physics
2. Babcock and Wilcox Co., Alliance, OH (United States). Research Center

A series of ex-situ prepared microfilamentary conductors have been prepared to determine the optimum heat treatment sequence for the development of a strain tolerant microfilamentary conductor based on Bi{sub 2}Sr{sub 2}Ca{sub 1}Cu{sub 2}O{sub 8{minus}{delta}}. In this paper, both monolithic tapes and the microfilamentary composites are prepared so that the difference between the two methods for the same heat treatment could be evaluated. The monolithic tapes are easy to fabricate and are used to provide a rough guide to the desired degree of melting and the optimum oxygen concentration needed for the highest critical current densities. One of the ex-situ microfilamentary composites showed a critical current density of 5000 A/cm{sup 2} at 4.2K while subjected to a strain exceeding 1%.

• OSTI ID: 5931989
• Report Number(s): CONF-900944--
• Conference Information: Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 27:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
FABRICATION
FILAMENTS
HEAT TREATMENTS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
STRAINS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTING WIRES
TRANSITION ELEMENT COMPOUNDS
WIRES