Structure and composition of the 115 K superconducting phase in the Bi-Ca-Sr-Cu-O system
Journal Article
·
· Appl. Phys. Lett.; (United States)
Results of convergent beam electron diffraction and energy dispersive x-ray (EDX) microanalysis of Bi/sub 1.2/Ca/sub 0.9/Sr/sub 0.9/Cu/sub 2/O/sub y/ superconductor are reported. The structure is orthorhombic with a = 5.63 A, b = 5.4 A, and c = 38.2 A. The c parameter is different from those reported by other workers and suggests that two extra perovskite units a/sub p/, where a/sub p/ = 3.82 A, have been introduced leading to c = 10a/sub p/. EDX microanalysis shows that the Cu content of this phase is higher than that reported by other workers. It is suggested that the phase with c = 38.2 A may be the higher temperature (115 K) superconductor.
- Research Organization:
- Department of Materials Science and Mineral Engineering and Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
- OSTI ID:
- 7203345
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 53:6; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
ELECTRON DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
LOW TEMPERATURE
MEISSNER-OCHSENFELD EFFECT
MICROSTRUCTURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
ELECTRON DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
LOW TEMPERATURE
MEISSNER-OCHSENFELD EFFECT
MICROSTRUCTURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
TRANSITION ELEMENT COMPOUNDS