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Structure of Bi-Pb-Sr-Ca-Cu-O superconductor with T/sub c/ of 108 K

Journal Article · · Modern Physics Letters B; (USA)
; ; ; ;  [1]
  1. General Research Institute for Non-Ferrous Metals, 100088, Beijing (CN)
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Five different phases have been observed in the Bi-Pb-Sr-Ca-Cu-O superconducting compound with T/sub c/ of 108K. The high-T/sub c/ and low-T/sub c/ superconducting phases with their compositions near (Bi/sub 0.82/Pb/sub 0.18/)/sub 4/Sr/sub 4/Ca/sub 3/Cu/sub 6/O/sub y/ and (Bi/sub 0.82/Pb/sub 0.18/)/sub 4/Sr/sub 4/Ca/sub 2/Cu/sub 4/O/sub y/ respectively have face-centered orthorhombic structure with a=0.540nm, b=0.545nm, c=3.669nm and a=0.540nm, b=0.546nm, c=3.077nm, respectively, and the former has the super-structure of 3.24nm, the latter has the super-structure of 2.7nm and is incommensurate in the b-direction. In addition, two kinds of minor phases with their compositions near (Sr/sub 0.6/Ca/sub 0.4/)Cu/sub 1.75/O/sub y/ and (Bi/sub 0.86/Pb/sub 0.14/)/sub 3/Sr/sub 1/Ca/sub 4/Cu/sub 1/O/sub y/ as well as CuO have also been observed.

OSTI ID:
5525159
Journal Information:
Modern Physics Letters B; (USA), Journal Name: Modern Physics Letters B; (USA) Vol. 3:4; ISSN MPLBE; ISSN 0217-9849
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
CHEMICAL COMPOSITION
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LEAD COMPOUNDS
LEAD OXIDES
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE