In situ laser deposition of superconducting YBa sub 2 Cu sub 3 O sub 7 minus x thin films on GaAs substrates
- New York State Institute on Superconductivity, Department of Electrical Computer Engineering, State University of New York at Buffalo, Bonner Hall, Amherst, New York (USA)
Highly {ital c}-axis oriented superconducting YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} (YBCO) thin films with a zero-resistance temperature of 85.5 K and a critical current density of 1.9{times}10{sup 3} A/cm{sup 2} at 77 K and zero field, respectively, have been deposited on GaAs substrates by {ital in} {ital situ} laser ablation. A barrier layer using a combination of yttrium-stabilized ZrO{sub 2} (YSZ) and Si{sub 3}N{sub 4} proved to be a most successful buffer on GaAs when YBCO was deposited at relatively high temperature, around 650 {degree}C. The electrical properties of the YBCO films were very dependent on YSZ deposition conditions. The electrical and structural relationship between YBCO films and the YSZ deposition conditions is further investigated by cross-section scanning electron microscopy and Auger electron spectroscopy depth profiling.
- OSTI ID:
- 5124676
- Journal Information:
- Journal of Applied Physics; (United States), Vol. 70:11; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Surface and interface properties of superconducting YBa sub 2 Cu sub 3 O sub 7 minus x thin films on GaAs using yttrium stablized ZrO sub 2 /Si sub 3 N sub 4 as a buffer layer
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Related Subjects
BARIUM COMPOUNDS
DEPOSITION
CUPRATES
SUPERCONDUCTING FILMS
YTTRIUM COMPOUNDS
AUGER ELECTRON SPECTROSCOPY
CRITICAL CURRENT
ELECTRICAL PROPERTIES
HIGH TEMPERATURE
HIGH-TC SUPERCONDUCTORS
LOW TEMPERATURE
QUATERNARY COMPOUNDS
SCANNING ELECTRON MICROSCOPY
TRANSITION TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
COPPER COMPOUNDS
CURRENTS
ELECTRIC CURRENTS
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
FILMS
MICROSCOPY
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPECTROSCOPY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties