Superconductive aluminum/YBa/sub 2/Cu/sub 3/O/sub x/ composites stabilized by oxygen/fluorine donors
Journal Article
·
· Appl. Phys. Lett.; (United States)
A fabrication technique for producing bulk and irregular-shaped aluminum/high T/sub c/ superconductor composites by traditional powder metallurgy method is reported. During the course of fabrication, the oxygen stoichiometry can be maintained at the desired level in order to retain superconductivity by addition of certain metal oxides or metal carbonates with low oxidation tendency, e.g., Ag/sub 2/O, Ag/sub 2/CO/sub 3/, and CdO. Moreover, replacement of oxygen with fluorine is also possible by addition of certain unstable fluorides like AgF. Superconductivity measurements of Al/YBa/sub 2/Cu/sub 3/O/sub x/ random composites with additions of different oxygen or fluorine donors show a similiar or improved T/sub c/ in comparison to the pure 123 compound. The concept of oxygen/fluorine donor can also be used in other fabrication techniques of metal/123 composites to stabilize the oxygen/fluorine stoichiometry.
- Research Organization:
- Department of Metallurgical Engineering, The University of Alabama, P.O. Box G, Tuscaloosa, Alabama 35487
- OSTI ID:
- 5444053
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 52:16; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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High-temperature superconducting ceramics: Processing-related issues and the thermodynamics of the phase transition
Journal Article
·
Sun Feb 19 23:00:00 EST 1989
· Appl. Phys. Lett.; (United States)
·
OSTI ID:6443954
Doping directed at the oxygen sites in Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub 7-/gamma//: The effect of sulfur, fluorine, and chlorine
Journal Article
·
Wed Nov 30 23:00:00 EST 1988
· J. Superconduct.; (United States)
·
OSTI ID:5676901
High-temperature superconducting ceramics: Processing-related issues and the thermodynamics of the phase transition
Thesis/Dissertation
·
Mon Dec 31 23:00:00 EST 1990
·
OSTI ID:5399000
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
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
FABRICATION
FLUORINE
HALOGENS
IMPURITIES
INFORMATION
MATERIALS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTIVITY
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
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
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EXPERIMENTAL DATA
FABRICATION
FLUORINE
HALOGENS
IMPURITIES
INFORMATION
MATERIALS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTIVITY
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES