Transport properties of the superconducting Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10}-DyBa{sub 2}SnO{sub 5.5} percolation system

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.51.9096· OSTI ID:165120

Koshy, J; Kumar, K S; Kurian, J; Yadava, Y P; Damodaran, A D ^[1]

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1. Council of Scientific and Industrial Research, Regional Research Laboraotory, Trivandrum 695019 (India)

Electrical transport properties and percolation behavior of superconducting Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10}-DyBa{sub 2}SnO{sub 5.5}, a superconductor-insulator composite system, have been studied by x-ray diffraction and temperature-resistivity measurements. Normal-state and superconducting percolation threshold values are found to be {similar_to}20 vol % of Bi(2223) in the composite. The values obtained for critical exponents describing the normal-state transport behavior of the system are matched with theoretically expected values for an idealized metal-insulator composite system. No detectable chemical reactivity was observed between Bi(2223) and the ceramic insulator DyBa{sub 2}SnO{sub 5.5}, even under severe heat treatment at 850 {degree}C. The implications are discussed.

• OSTI ID: 165120
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 14 Vol. 51; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
BISMUTH OXIDES
CALCIUM OXIDES
CHEMICAL ACTIVATION
COMPOSITE MATERIALS
CUPRATES
DYSPROSIUM OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL INSULATORS
HIGH-TC SUPERCONDUCTORS
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TIN OXIDES
TRANSPORT THEORY
X-RAY DIFFRACTION