Synthesis of YBa sub 2 Cu sub 4 O sub 8 at One Atmosphere Oxygen Pressure by the Modified Citrate Gel Process

High T sub c superconducting YBa sub 2 Cu sub 4 O sub 8 was successfully synthesized via a modified citrate gel process at 1 atm oxygen pressure. The resulting material had a stable and reproducible superconducting transition temperature approx 80K, confirmed by both resistivity and magnetic measure...

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Bibliographic Details
Published in:Applied physics letters 1990-08, Vol.57 (9), p.920-921
Main Authors: Liu, R S, Janes, R, Bennett, M J, Edwards, P P
Format: Article
Language:English
Subjects:
360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication
360204 - Ceramics, Cermets, & Refractories- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COLLOIDS
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
GELS
HIGH-TC SUPERCONDUCTORS
MATERIALS SCIENCE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
STOICHIOMETRY
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SYNTHESIS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
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Summary:High T sub c superconducting YBa sub 2 Cu sub 4 O sub 8 was successfully synthesized via a modified citrate gel process at 1 atm oxygen pressure. The resulting material had a stable and reproducible superconducting transition temperature approx 80K, confirmed by both resistivity and magnetic measurements. This technique can be employed in a large-scale preparation of the YBa sub 2 Cu sub 4 O sub 8 powders. Diffraction patterns, Graphs. 9 ref.--AA
ISSN:0003-6951
1077-3118
DOI:10.1063/1.104267