High T/sub c/ superconductivity and substructure of Bi-Sr-Ca-Cu-O system

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Modern Physics Letters B; (USA)

OSTI ID:5658015

Xing, Z; Sunqi, F; Guo, L; Chongde, W; Hang, Z; Zhaohui, S; Wenbin, Z; Hui, G; Jian, Z; Qingzhe, W ^[1]

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1. Dept. of Physics and Institute of Solid State Physics, Peking Univ. (CN)

Bi/sub chiSr/1/sub Ca/1/sub Cu/y/sub O//sub z/(chi, y = 1, 2 or 3) high T/sub c/ superconductors were synthesized by solid state reaction method. There are two superconducting phases in Bi-Sr-Ca-Cu-O system: 110 {Kappa} phase and 80 {Kappa} phase. The relative portion of the two phases and the state of superconducting connection are closely related to chemical compositions and the conditions of processing. X-ray powder diffraction shows that there exists a main phase with orthorhombic symmetry in the samples of different compositions and conditions of processing. According to X-ray diffraction data, the lattice constants of the main phase in the sample of nominal composition Bi/sub 1/Sr/sub 1/Ca/sub 1/Cu/sub 2/O/sub z/ have been determined as a/sub //r// = 5.44A, b/sub {omicron}/ = 5.35A and c/sub {omicron}/ = 30.66A. Electron diffraction shows complicated modulation structure along b- and c- axes. High resolution image along (001) zone axis indicates the modulation structure along b-axis.

• OSTI ID: 5658015
• Journal Information: Modern Physics Letters B; (USA), Journal Name: Modern Physics Letters B; (USA) Vol. 2:2; ISSN 0217-9849; ISSN MPLBE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
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Cermets
& Refractories-- Structure & Phase Studies
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Cermets
& Refractories-- Physical Properties
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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
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON DIFFRACTION
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
PLASMA
POWDERS
SCATTERING
SOLID-STATE PLASMA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION