Identification of Pb-doped Bi-Sr-Ca-Cu-O superconducting phases by convergent beam electron diffraction

Journal Article · Mon Jul 17 04:00:00 EDT 1989 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.102386· OSTI ID:6011818

Fung, K K; Yang, C Y; Yan, Y F

Pb-doped Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ (2223) and Bi/sub 2/ Sr/sub 2/ Ca/sub 3/ Cu/sub 4/ O/sub 12/ (2234) superconducting phases have been identified by convergent beam electron diffraction. The /ital c/ parameters of the 2223 and 2234 phases are 37.6 and 44 A, respectively. The two phases have the same symmetry; their common point group is /ital mmm/. Both phases are modulated, but the modulations are different from and considerably weaker than that in the unleaded Bi/sub 2/ Sr/sub 2/ CaCu/sub 2/ O/sub 8/ . This work confirms for the first time the existence of the 2234 phase.

• Research Organization: Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, Peoples's Republic of China (CN)
• OSTI ID: 6011818
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 55:3; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
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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 DOPING
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON DIFFRACTION
ELEMENTS
LATTICE PARAMETERS
LEAD
LOW TEMPERATURE
METALS
MODULATION
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
SCATTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE