Superconductivity of BaPb/sub 1-x/Bi/sub x/O/sub 3/ films prepared by laser evaporation method
Journal Article
·
· Sov. Phys. - Solid State (Engl. Transl.); (United States)
OSTI ID:5926153
Superconducting films of BaPb/sub 1-x/Bi/sub x/O/sub 3/ were prepared by laser evaporation and heat treatment of the resultant films in air. A study was made of the behavior of the film resistance in the course of evaporation and heat treatment, and also at low temperatures in magnetic fields up to 40 kOe. It was found that heat treatment at 550 /sup 0/C resulted in an irreversible fall of the resistance by more than 8--10 orders of magnitude and in the appearance of superconducting properties in films of compositions within the range 0.05< or =x< or =0.30. The temperature dependences of the resistance of films with rhoapprox.1--10/sup 4/ ..cap omega.. x cm had maxima associated with phase transitions. It was also found that in the case of the films with the compositions x = 0.25 and 0.30 the temperature dependences of the critical magnetic field differed considerably from those predicted by the BCS theory.
- Research Organization:
- Engineering-Physics Institute, Moscow
- OSTI ID:
- 5926153
- Journal Information:
- Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 25:1; ISSN SPSSA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CHEMICAL COMPOSITION
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EVAPORATION
FABRICATION
FILMS
HEAT TREATMENTS
HEATING
HIGH TEMPERATURE
IRREVERSIBLE PROCESSES
LASER-RADIATION HEATING
LEAD COMPOUNDS
MAGNETIC FIELDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLASMA HEATING
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CHEMICAL COMPOSITION
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EVAPORATION
FABRICATION
FILMS
HEAT TREATMENTS
HEATING
HIGH TEMPERATURE
IRREVERSIBLE PROCESSES
LASER-RADIATION HEATING
LEAD COMPOUNDS
MAGNETIC FIELDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLASMA HEATING
SUPERCONDUCTING FILMS
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE