The modulation of the monoclinic Bi sub 2 Sr sub 2 CuO sub 6+. delta. phase

Journal Article · Mon Jun 01 00:00:00 EDT 1992 · Journal of Solid State Chemistry; (United States)

OSTI ID:7000058

Garcia-Alvarado, F; Moran, E; Alario-Franco, M A ^[1]

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1. Univ. Complutense, Madrid (Spain)

A polycrystalline sample of the monoclinic phase Bi{sub 2}Sr{sub 2}CuO{sub 6} has been prepared. The displacive modulation, also present in other compounds of the Bi-Sr-Ca-Cu-O system, has been investigated by means of both electron diffraction and electron microscopy. The modulation is commensurate but it is affected by a strong instability. Discommensurations produce an incommensurate modulation that, in this sample, does not have a well ordered periodicity; this is likely due to a partial disorder of the excess oxygen atoms. A higher-order superstructure (eightfold), also found in the same preparation, is also affected by discommensurations.

• OSTI ID: 7000058
• Journal Information: Journal of Solid State Chemistry; (United States), Vol. 98:2; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
PHASE STUDIES
COPPER OXIDES
STRONTIUM OXIDES
CHEMICAL PREPARATION
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
MONOCLINIC LATTICES
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
INFORMATION
MICROSCOPY
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SCATTERING
STRONTIUM COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies