Preparation of Cu-Y-Ba alloys by mechanical alloying

Journal Article · Sat Sep 01 04:00:00 EDT 1990 · Journal of Materials Research; (USA)

DOI:https://doi.org/10.1557/JMR.1990.1802· OSTI ID:6484802

Batalla, E; Zwartz, E G ^[1]

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1. Department of Physics, Royal Military College, Kingston, Ontario K7K 5L0 (Canada)

Preliminary results of producing Cu-Y-Ba metallic precursors to high {Tc} superconductors by high energy ball milling are reported. Mechanical alloying of Cu, Y, and Ba powders (various stoichiometries) produced either amorphous, mixed crystalline/amorphous or fine grained crystalline powders as shown by their x-ray spectra. None of the powders exhibited flux exclusion down to a temperature of 1.4 K. The YBa{sub 2}Cu{sub 3} precursor consisted of mixture of crystalline phases. After being pressed into a pellet and sintered, it was found to be superconducting at liquid nitrogen temperatures.

• OSTI ID: 6484802
• Journal Information: Journal of Materials Research; (USA), Journal Name: Journal of Materials Research; (USA) Vol. 5:9; ISSN JMREE; ISSN 0884-2914
• 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
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
FABRICATION
HIGH-TC SUPERCONDUCTORS
INFORMATION
LOW TEMPERATURE
MACHINING
MILLING
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDERS
PRECURSOR
SINTERING
SPECTRA
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
WIRES
X-RAY SPECTRA
YTTRIUM COMPOUNDS
YTTRIUM OXIDES