Critical Currents in Melt-Textured YBa₂Cu₃O_x

Conference · Mon Jul 22 04:00:00 EDT 1991

OSTI ID:5566027

Shi, Donglu ^[1]; Chen, J. G. ^[1]; Salem-Sugui, Jr., S. ^[1]; Goretta, K. C. ^[1]

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1. Argonne National Laboratory (ANL), Argonne, IL (United States)

YBa₂Cu₃O_x bars and wires textured by partial—melt-growth and zone—melting methods have been characterized. Specimens exhibited critical current densities (J_c) greater than 10⁴ A/cm² at 77 K in a 2 T field. The high J_c values were related to the presence of low-angle grain boundaries and high concentrations of crystal defects. These defects were found to be effective flux-pinning centers.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5566027
• Report Number(s): ANL/CP--72561; CONF-910736--9; ON: DE91016523
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
GRAIN BOUNDARIES
HIGH-TC SUPERCONDUCTORS
MAGNETIC FLUX
MELTING
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES