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), Vol. 59:9; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BARIUM OXIDES
SUPERCONDUCTING FILMS
COPPER OXIDES
TRANSITION TEMPERATURE
YTTRIUM OXIDES
ABLATION
CRITICAL CURRENT
HIGH-TC SUPERCONDUCTORS
ZIRCONIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CURRENTS
ELECTRIC CURRENTS
FILMS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties