Synthesis of ceramic superconductors under low oxygen pressure

Conference · Fri Dec 01 04:00:00 EST 1989

DOI:https://doi.org/10.1007/BF02747312· OSTI ID:6909190

Balachandran, U; Poeppel, R B; Emerson, J E; Lanagan, M T; Youngdahl, C A; Johnson, S A

We have developed a process for synthesizing orthorhombic YBa{sub 2}Cu{sub 3}O{sub x} ( 123'') superconducting powders, which involves calcination of the precursor powder under reduced total oxygen pressure. Because a single calcination at 800{degrees}C for 4 h in flowing oxygen with a pressure of 2 mm Hg results in essentially phase-pure material, total calcination times have been drastically reduced. At liquid nitrogen temperature, sintered pellets made from this powder have critical current densities of {approximately}1000 A/cm{sup 2} in zero applied magnetic field. 7 refs., 2 figs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/CE
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6909190
• Report Number(s): CONF-900133-2; ON: DE90010415
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCINATION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CERAMICS
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CURRENT DENSITY
DECOMPOSITION
ELEMENTS
HUMIDITY
MAGNETIC FIELDS
MEASURING METHODS
NONMETALS
OPTIMIZATION
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PARTICLES
POWDERS
PRESSURE EFFECTS
PYROLYSIS
SAMPLING
SUPERCONDUCTING DEVICES
SYNTHESIS
THERMAL ANALYSIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES