Superconducting Tl-Ca-Ba-Cu-O thin films with zero resistance at temperatures of up to 120 K
We have prepared superconducting Tl-Ca-Ba-Cu-O thin films on a variety of substrates with transition temperatures as high as approx. =120 K, confirmed by sharp onsets of substantial Meissner and shielding signals at the same temperatures. The properties of the films are found to depend sensitively on the post-annealing conditions. Highly textured c-axis-oriented films comprised mostly of Tl/sub 2/Ca/sub 1/Ba/sub 2/Cu/sub 2/O/sub x/, Tl/sub 1/Ca/sub 2/Ba/sub 2/Cu/sub 3/O/sub x/, and Tl/sub 2/Ca/sub 2/Ba/sub 2/Cu/sub 3/O/sub x/ were synthesized by varying the annealing procedure with corresponding maximum superconducting transition temperatures of approx. =100, 110, and 120 K, respectively.
- Research Organization:
- IBM Almaden Research Center, San Jose, California 95120
- OSTI ID:
- 7161149
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 53:4; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360201 -- Ceramics
Cermets
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360204* -- Ceramics
Cermets
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656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DATA
EXPERIMENTAL DATA
FABRICATION
FILMS
HEAT TREATMENTS
INFORMATION
LOW TEMPERATURE
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MEISSNER-OCHSENFELD EFFECT
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING FILMS
THALLIUM COMPOUNDS
THALLIUM OXIDES
THERMODYNAMIC PROPERTIES
THIN FILMS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES