Electrical characterization of chemically modified YBa sub 2 Cu sub 3 O sub 7 minus x surfaces
Journal Article
·
· Applied Physics Letters; (USA)
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (USA)
Results on electrical characterization of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} thin-film surfaces treated with a Br/ethanol chemical etch are presented. Electrical measurements of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}/Au/Nb device structures fabricated using polycrystalline, post-annealed YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} films with Br-etched surfaces, show improvements of approximately one or two orders of magnitude in current densities and resistivities (resistance-area products) relative to unetched devices. The existence of supercurrents in these structures has been confirmed by observation of the ac Josephson effect, and by magnetic field and temperature studies of the critical currents. The Br-etch process has produced 10{times}10 {mu}m{sup 2} devices with critical current densities greater than 400 A/cm{sup 2} and resistivities as low as 4{times}10{sup {minus}7} {Omega} cm{sup 2}.
- OSTI ID:
- 6720340
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 56:26; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electrical contact studies of chemically treated YBa sub 2 Cu sub 3 O sub 7 minus x surfaces
Fabrication of heteroepitaxial YBa sub 2 Cu sub 3 O sub 7 minus x -PrBa sub 2 Cu sub 3 O sub 7 minus x -YBa sub 2 Cu sub 3 O sub 7 minus x Josephson devices grown by laser deposition
All a -axis oriented YBa sub 2 Cu sub 3 O sub 7 minus y -PrBa sub 2 Cu sub 3 O sub 7 minus sub z -YBa sub 2 Cu sub 3 O sub 7 minus sub y Josephson devices operating at 80 K
Conference
·
Wed Jan 24 23:00:00 EST 1990
· AIP Conference Proceedings (American Institute of Physics); (USA)
·
OSTI ID:6826385
Fabrication of heteroepitaxial YBa sub 2 Cu sub 3 O sub 7 minus x -PrBa sub 2 Cu sub 3 O sub 7 minus x -YBa sub 2 Cu sub 3 O sub 7 minus x Josephson devices grown by laser deposition
Journal Article
·
Sun Nov 05 23:00:00 EST 1989
· Applied Physics Letters; (USA)
·
OSTI ID:5169720
All a -axis oriented YBa sub 2 Cu sub 3 O sub 7 minus y -PrBa sub 2 Cu sub 3 O sub 7 minus sub z -YBa sub 2 Cu sub 3 O sub 7 minus sub y Josephson devices operating at 80 K
Journal Article
·
Mon Aug 05 00:00:00 EDT 1991
· Applied Physics Letters; (USA)
·
OSTI ID:5739438
Related Subjects
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ETCHING
FILMS
JOSEPHSON EFFECT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
SURFACE FINISHING
SURFACE TREATMENTS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ETCHING
FILMS
JOSEPHSON EFFECT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
SURFACE FINISHING
SURFACE TREATMENTS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES