Modulated structure in Bi sub 2+ sub x Sr sub 2 minus sub x Cu sub 1+ sub y O sub 6+. delta
Journal Article
·
· Journal of Materials Research; (USA)
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611, Japan (JP)
The modulated structure in solid solution Bi{sub 2+{ital x}}Sr{sub 2{minus}{ital x}}Cu{sub 1+{ital y}}O{sub 6+{delta}} (0.1{lt}{ital x}{lt}0.6, {ital y}{similar to}{ital x}/4) has been investigated by means of powder x-ray diffraction, electron diffraction, and transmission electron microscopy. The (010) component of the modulation vector decreases almost linearly with increasing {ital x}, from 5.2b ({ital x}=0.1) to 4.2b ({ital x}=0.5), where b is the unit length of the average structure along the (010) direction, and is little sensitive to excess oxygen content {delta}. A structure model of the modulation based on a periodic substitution of Sr for Bi and formation of Bi blocks whose size varies with {ital x} is proposed. Relations among various modulations appearing in other related phases such as the Pb-substituted 105 K {ital T}{sub {ital c}} phase are discussed.
- OSTI ID:
- 5638114
- Journal Information:
- Journal of Materials Research; (USA), Journal Name: Journal of Materials Research; (USA) Vol. 6:3; ISSN JMREE; ISSN 0884-2914
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIFFRACTION
DISPERSIONS
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
HIGH-TC SUPERCONDUCTORS
MICROSCOPY
MIXTURES
MODULATION
OXIDES
OXYGEN COMPOUNDS
POWDERS
SCATTERING
SOLID SOLUTIONS
SOLUTIONS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
STRUCTURAL MODELS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIFFRACTION
DISPERSIONS
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
HIGH-TC SUPERCONDUCTORS
MICROSCOPY
MIXTURES
MODULATION
OXIDES
OXYGEN COMPOUNDS
POWDERS
SCATTERING
SOLID SOLUTIONS
SOLUTIONS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
STRUCTURAL MODELS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION