Formation of (Ca sub 1 minus x Sr sub x ) sub 2 PbO sub 4 in Bi(Pb)-Sr-Ca-Cu-O system: Correlation with the formation of the 2223 high- Tc phase

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.346535· OSTI ID:6430196

Shiloh, M; Wood, I; Brown, M; Beech, F; Boyd, I W ^[1]

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1. Department of Electronic and Electrical Engineering, University College London, Torrington Place, London WC1E 7JE (United Kingdom)

X-ray diffraction data of Bi{sub 1.4}Pb{sub 0.6}Sr{sub 2}Ca{sub 2}Cu{sub 3.6}O{sub 10+{ital x}} samples show a sharp change near the annealing temperature of 845 {degree}C. Below this temperature a solid solution of (Ca{sub 0.867}Sr{sub 0.133}){sub 2}PbO{sub 4} is formed and prolonged annealing leads to transformation of the 2212 phase to the 2223 phase. Above this temperature, Ca{sub 2}PbO{sub 4} is formed, and prolonged annealing leads to an irreversible transformation of both the 2212 phase and the 2223 phase to the 2201 phase.

• OSTI ID: 6430196
• Journal Information: Journal of Applied Physics; (USA), Vol. 68:5; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
PHASE STUDIES
CALCIUM OXIDES
COPPER OXIDES
LEAD OXIDES
STRONTIUM OXIDES
ANNEALING
HIGH-TC SUPERCONDUCTORS
IRREVERSIBLE PROCESSES
PHASE TRANSFORMATIONS
SOLID SOLUTIONS
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
DIFFRACTION
DISPERSIONS
HEAT TREATMENTS
LEAD COMPOUNDS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SOLUTIONS
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies