a -axis oriented YBa sub 2 Cu sub 3 O sub 7 minus x thin films on Si with CeO sub 2 buffer layers
Journal Article
·
· Applied Physics Letters; (United States)
- Los Alamos National Laboratory, Los Alamos, New Mexico (USA)
- Department of Electronics and Engineering, Iwaki Meisei University, 5-5-1 Iino-Chuodai, Iwaki, Fukushima 970 (Japan)
We have grown {ital a}-axis oriented YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} (YBCO) thin films on Si(100) substrates with (110) oriented insulating buffer layers of cerium dioxide (CeO{sub 2}) using the pulsed laser deposition technique. The films are highly oriented and textured as determined by {theta}--2{theta} x-ray diffraction, x-ray pole-figure scan, scanning electron microscopy, Rutherford backscattering spectroscopy, and ion channeling. No diffusion at the interface has been found at growth temperatures up to 760 {degree}C, indicating the CeO{sub 2} is a chemically stable and structurally compatible intermediate material for the growth of YBCO on Si. A zero resistance superconducting transition temperature of 87 K and a critical-current density ({ital J}{sub {ital c}}) of 1.5{times}10{sup 5} A/cm{sup 2} at 75 K have been measured; {ital J}{sub {ital c}} obtained represents the highest value for the {ital a}-axis oriented YBCO films.
- OSTI ID:
- 5172776
- Journal Information:
- Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 59:16; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BUFFERS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
DEPOSITION
ELECTRIC CURRENTS
HIGH-TC SUPERCONDUCTORS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUATERNARY COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BUFFERS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
DEPOSITION
ELECTRIC CURRENTS
HIGH-TC SUPERCONDUCTORS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUATERNARY COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES