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), Journal Name: Journal of Applied Physics; (United States) Vol. 70:11; ISSN 0021-8979; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
AUGER ELECTRON SPECTROSCOPY
BARIUM COMPOUNDS
COPPER COMPOUNDS
CRITICAL CURRENT
CUPRATES
CURRENTS
DEPOSITION
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
FILMS
HIGH TEMPERATURE
HIGH-TC SUPERCONDUCTORS
LOW TEMPERATURE
MICROSCOPY
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUATERNARY COMPOUNDS
SCANNING ELECTRON MICROSCOPY
SPECTROSCOPY
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS