Structural study of undoped and doped Bi sub 2 Sr sub 2 CuO sub 6 phases by transmission electron microscopy

Journal Article · Mon Dec 25 04:00:00 EST 1989 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.102371· OSTI ID:7171587

Wen, J G ^[1]; Liu, Y ^[2]; Ren, Z F; Yan, Y F ^[1]; Zhou, Y Q; Fung, K K ^[3]

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1. Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100 080, People's Republic of China (CN)
2. Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, P.O. Box 2724, Beijing 100 080, People's Republic of China (CN)
3. Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100 080, People's Republic of China, and Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, P.O. Box 2724, Beijing 100 080, People's Republic of China (CN)

Bi-based superconducting phases have been studied by transmission electron microscopy. The strong one-dimensional modulations in undoped and Ce-doped monoclinic Bi{sub 2}Sr{sub 2}CuO{sub 6} (2201) samples are different from one another. We have found a new 2201 phase containing Pb and Ca with orthorhombic symmetry in nominal (Bi{sub 0.90}Pb{sub 0.10}){sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} crystals. Its structure with space group {ital Bbmb} and two-dimensional modulation are analogous to those of the Pb-doped higher members of the structural series Bi{sub 2}Sr{sub 2}Ca{sub {ital n}{minus}1}Cu{sub {ital n}}O{sub 2{ital n}+4}. Hence, this new orthorhombic rather than the monoclinic 2201 phase should be the first member of the structural series.

• OSTI ID: 7171587
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 55:26; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

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
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
INFORMATION
LEAD COMPOUNDS
LEAD OXIDES
LOW TEMPERATURE
MICROSCOPY
NUMERICAL DATA
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHASE STUDIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY