Highly oriented Bi(Pb)-Sr-Ca-Cu-O superconducting thin films by magnetron sputtering of a single target
- Department of Electronics, Kagoshima University, Koorimoto, Kagoshima 890, Japan (JP)
Superconducting Bi(Pb)-Sr-Ca-Cu-O thin films have been prepared onto (100) MgO substrates by dc magnetron sputtering using a single sintered target. The targets used were Bi{sub 2.7},Pb{sub {ital x}}Sr{sub 2}Ca{sub 2.25}Cu{sub 3.75}O{sub {ital y}} ({ital x}=1.5, 1.75, 2.0, 2.25 and 2.5) in nominal composition. All the films were deposited at 400 {degree}C and annealed at 850 {degree}C for 3 h in air. Although the superconducting properties of the thin films were very sensitive to the Pb content of the target, reproducible results were obtained. After deposition from the target with {ital x}=2.0 and subsequent high-temperature annealing, we have succeeded in obtaining highly {ital c}-axis oriented thin films which have shown zero resistivity at 115 K. This may be due to the optimum substitution of Pb for Bi in addition to the conditions during the high-temperature process. The average cationic ratio of the film was shown to be Bi:Pb:Sr:Ca:Cu=1.75:0.17:2:2.1:3.2 by electron-probe x-ray microanalysis.
- OSTI ID:
- 5490533
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 55:15; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
EXPERIMENTAL DATA
FABRICATION
FILMS
HEAT TREATMENTS
HIGH TEMPERATURE
INFORMATION
LEAD COMPOUNDS
LEAD OXIDES
LOW TEMPERATURE
MAGNETRONS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
SINTERING
SPUTTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE