High-temperature resistance behavior of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+//sub y/ and YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ superconductors
Journal Article
·
· Appl. Phys. Lett.; (United States)
High- and low-temperature resistance measurements have been carried out on Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+//sub y/ and YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ in air and in vacuum. Both the ceramics exhibit a significant change in oxygen content during annealing between 350 and 450 /sup 0/C. The Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+//sub y/ sample exhibits an increase in resistance with increased oxygen content resulting in deterioration of superconductivity, whereas YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ shows improvement in superconducting behavior with increase in oxygen content. Consequently Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8+//sub y/ prepared by fast cooling from the sintering temperature possesses a higher T/sub c/ , whereas slow cooling of YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/ produces a higher T/sub c/ .
- Research Organization:
- Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, United Kingdom
- OSTI ID:
- 7015956
- 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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Journal Article
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Fri Jul 01 00:00:00 EDT 1988
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·
OSTI ID:7004307
Chemical modification of the superconducting oxides YBa[sub 2]Cu[sub 3]O[sub 7-x] and Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8+x]
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Fri Dec 31 23:00:00 EST 1993
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OSTI ID:6917137
Enhancement of the superconducting transition temperature of TlSr sub 2 CaCu sub 2 O sub 7 by yttrium and vanadium substitutions
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OSTI ID:5689303
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
FABRICATION
HEAT TREATMENTS
HIGH TEMPERATURE
INFORMATION
LOW TEMPERATURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
SINTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VERY HIGH TEMPERATURE
VERY LOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
FABRICATION
HEAT TREATMENTS
HIGH TEMPERATURE
INFORMATION
LOW TEMPERATURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
SINTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VERY HIGH TEMPERATURE
VERY LOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES