Role of buffer layers for superconducting YBa sub 2 Cu sub 3 O sub 7 minus x thin films on GaAs substrates
- Department of Electrical and Computer Engineering, New York State Institute on Superconductivity, State University of New York at Buffalo, Bonner Hall, Amherst, New York (USA)
High-temperature superconducting YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} (YBCO) thin films were deposited on GaAs substrates by laser ablation. A double-buffer layer of yttrium-stabilized ZrO{sub 2} (YSZ)/Si{sub 3}N{sub 4} was used to nucleate YBCO but also to prevent the degradation of the GaAs during YBCO film deposition. Superconducting YBCO thin films with a highly {ital c}-axis orientation perpendicular to the substrate surface, zero-resistance temperature of 85.5 K, and critical current density of 1.9{times}10{sup 3} and 1.3{times}10{sup 4} A/cm{sup 2} at 77 and 50 K, respectively, have been achieved in our experiments. These values are believed to be the best results reported so far for YBCO on GaAs.
- OSTI ID:
- 5420258
- Journal Information:
- Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 59:9; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABLATION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
ELECTRIC CURRENTS
FILMS
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES