Superconducting Tl-Ba-Ca-Cu-O films by sputtering
Superconducting Tl-Ba-Ca-Cu-O thin films 0.2--1.0 ..mu..m thick have been prepared on MgO(100) and SrTiO/sub 3/(100) substrates by dc diode sputtering using a single oxide target. Films containing primarily the Tl/sub 2/Ba/sub 2/Ca/sub 1/Cu/sub 2/O/sub 8/ phase were obtained with a T/sub c/ (R = 0) at 102 K and a transport J/sub c/ of 10/sup 4/ A/cm/sup 2/ at 90 K. For the nearly pure phase Tl/sub 2/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ films, the T/sub c/'s (R = 0) are higher at 116 K and the transport J/sub c/'s at 100 K are of 10/sup 5/ A/cm/sup 2/. Both types of films show a strong preferred orientation with the c axis perpendicular to the film plane. The rocking curve of the Tl/sub 2/Ba/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ films is 0.32/sup 0/ wide and the typical grain size is over 10 ..mu..m.
- Research Organization:
- ATandT Bell Laboratories, Murray Hill, New Jersey 07974
- OSTI ID:
- 6726747
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 53:21; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL STRUCTURE
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
FABRICATION
FILMS
GRAIN SIZE
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SIZE
SPUTTERING
SUPERCONDUCTING FILMS
THALLIUM COMPOUNDS
THALLIUM OXIDES
THERMODYNAMIC PROPERTIES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE