Lanthanum gallate substrates for epitaxial high-temperature superconducting thin films
Journal Article
·
· Appl. Phys. Lett.; (United States)
We demonstrate that lanthanum gallate (LaGaO/sub 3/) has considerable potential as an electronic substrate material for high-temperature superconducting films. It provides a good lattice and thermal expansion match to YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/, can be grown in large crystal sizes, is compatible with high-temperature film processing, and has a reasonably low dielectric constant (epsilonapprox. =25) and low dielectric losses. Epitaxial YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ films grown on LaGaO/sub 3/ single-crystal substrates by three techniques have zero resistance between 87 and 91 K.
- Research Organization:
- IBM Thomas J. Watson Research Center, P. O. Box 218, Yorktown Heights, New York 10598
- OSTI ID:
- 6775535
- Journal Information:
- Appl. Phys. Lett.; (United States), Vol. 53:19
- Country of Publication:
- United States
- Language:
- English
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· IBM Journal of Research and Development (International Business Machines); (United States)
·
OSTI ID:6775535
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Comparison between LaGaO/sub 3/, LaAlO/sub 3/, KTaO/sub 3/, and SrTiO/sub 3/ substrates for the epitaxial growth of YBa/sub 2/Cu/sub 3/O/sub 7/minus/x/ thin films by a ''BaF/sub 2/ process''
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OSTI ID:6775535
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OSTI ID:6775535
Related Subjects
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
EPITAXY
TRANSITION TEMPERATURE
GALLIUM OXIDES
COATINGS
CRYSTAL GROWTH
CRYSTAL STRUCTURE
DIELECTRIC PROPERTIES
LANTHANUM OXIDES
SUPERCONDUCTING FILMS
FABRICATION
THIN FILMS
YTTRIUM OXIDES
CZOCHRALSKI METHOD
EXPERIMENTAL DATA
LOW TEMPERATURE
SUBSTRATES
CHALCOGENIDES
CRYSTAL GROWTH METHODS
DATA
ELECTRICAL PROPERTIES
FILMS
GALLIUM COMPOUNDS
INFORMATION
LANTHANUM COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360204 - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
EPITAXY
TRANSITION TEMPERATURE
GALLIUM OXIDES
COATINGS
CRYSTAL GROWTH
CRYSTAL STRUCTURE
DIELECTRIC PROPERTIES
LANTHANUM OXIDES
SUPERCONDUCTING FILMS
FABRICATION
THIN FILMS
YTTRIUM OXIDES
CZOCHRALSKI METHOD
EXPERIMENTAL DATA
LOW TEMPERATURE
SUBSTRATES
CHALCOGENIDES
CRYSTAL GROWTH METHODS
DATA
ELECTRICAL PROPERTIES
FILMS
GALLIUM COMPOUNDS
INFORMATION
LANTHANUM COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360204 - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies