The superconducting properties of YBa sub 2 Cu sub 3 O sub 7 minus x -gold composites
Journal Article
·
· Journal of Applied Physics; (USA)
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565, (Japan)
- Department of Electronics, College of Engineering, University of Osaka Prefecture, 4-804 Nakamozuume, Sakai, Osaka 591, (Japan)
Gold powder was mixed with YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} superconductors for the purpose of increasing the critical current density ({ital J}{sub {ital c}}). The critical transition temperature at zero resistance ({ital T}{sup zero}{sub {ital c}}) gradually decreased by the Au addition. However, the depression of {ital T}{sup zero}{sub {ital c}} was as low as 2 K for the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} -Au composite with Au mixing up to 40 wt.%. A maximum {ital J}{sub {ital c}} of 307 A/cm{sup 2} was obtained for the Au 5-wt. % mixed composite. The {ital J}{sub {ital c}} was about four times as high as that for YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} without Au mixing. In addition to the {ital J}{sub {ital c}} enhancement, the weak-link problem was appreciably improved by the Au addition.
- OSTI ID:
- 7246878
- Journal Information:
- Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 67:2; ISSN 0021-8979; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
GOLD
MATERIALS
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
GOLD
MATERIALS
METALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES