Texturing of YBa sub 2 Cu sub 3 O sub 6+x by melt processing

Journal Article · Fri Mar 01 04:00:00 EST 1991 · JOM (Journal of the Minerals, Metals and Materials Society); (USA)

DOI:https://doi.org/10.1007/BF03220159· OSTI ID:5563259

McGinn, P J; Chen, W; Zhu, N ^[1]

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1. Univ. of Notre Dame (US)

The initial excitement over the discovery of high-critical-temperature superconductors has been tempered by the realization of how difficult it is to optimize transport properties for bulk applications. However, the three years since the discovery of superconductivity in YBa{sub 2}Cu{sub 3}O{sub 6+x} (Y1-2-3), much progress has been made in improving the transport properties. In particular, melt processing has proven effective in producing textured microstructures, leading to improvements in the critical current density of Y1-2-3. This article provides a brief review of the principles of melt texturing of Y1-2-3 and the progress made in this area. In sintered Y1-2-3, the critical current density (J{sub c}) is usually rather low (100-1,000 A/cm{sup 2} in zero applied field). There are several postulated causes for the low transport J{sub c} values, including anisotropy in the material, chemical or structural variations at grain boundaries, nonsuperconducting material along grain boundaries, and microcracking.

• OSTI ID: 5563259
• Journal Information: JOM (Journal of the Minerals, Metals and Materials Society); (USA), Journal Name: JOM (Journal of the Minerals, Metals and Materials Society); (USA) Vol. 43:3; ISSN JOMME
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
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 STRUCTURE
CURRENT DENSITY
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
GRAIN BOUNDARIES
HIGH-TC SUPERCONDUCTORS
MATERIALS
MELTING
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PROCESSING
SINTERED MATERIALS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEXTURE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES