On the peritectic transformation in Bi sub 4 Sr sub 3 Ca sub 3 Cu sub 4 O sub 16+x and its role in the formation of the Bi sub 2 Sr sub 2 Ca sub 2 Cu sub 3 O sub 10 phase

Journal Article · Thu Nov 01 00:00:00 EST 1990 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(90)90298-C· OSTI ID:6073793

Luo, J S; Faudot, F; Chevalier, J P; Portier, R; Michel, D ^[1]

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1. CECM-CNRS, Vitry (France)

The authors have studied the structural and microstructural changes of Bi{sub 4}Sr{sub 3}Ca{sub 3}Cu{sub 4}O{sub 16+x} on annealing close to its melting point and correlated these with the thermal stability and the electrical properties. Thermal analyses suggest that the Bi{sub 4}Sr{sub 3}Ca{sub 3}Cu{sub 4}O{sub 16+x} phase undergoes a peritectic or peritectic-like transformation, accompanied by oxygen loss, just before complete melting. This transformation leads to the formation of the Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} phase as identified by x-ray diffraction (XRD) and confirmed by electrical resistivity measurements. Electron microscopy shows that Bi{sub 4}Sr{sub 3}Ca{sub 3}Cu{sub 4}O{sub 16+x} phase is systematically observed between this amorphous phase and the transformed regions. Finally, they discuss the consequences of this transformation on electrical properties and on the conditions required for the preparation of a pure Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} phase.

• OSTI ID: 6073793
• Journal Information: Journal of Solid State Chemistry; (USA), Vol. 89:1; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
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CRYSTAL-PHASE TRANSFORMATIONS
ELECTRIC CONDUCTIVITY
CALCIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
STRONTIUM OXIDES
DIFFERENTIAL THERMAL ANALYSIS
EXPERIMENTAL DATA
MEASURING METHODS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
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COHERENT SCATTERING
COPPER COMPOUNDS
DATA
DIFFRACTION
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
INFORMATION
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NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SCATTERING
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
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