Growth structure and superconductivity of Bi$_{1.7}$Bi$_{0.3}$Sr$_{2}$Ca$_{2}$Cu$_{3}$O$_{10+\delta }$ ceramics synthesized from glass-crystal precursors processed in solar type ovens
POSTER
Abstract
The growth structure as well as the superconductivity of Bi/Pb2223 alloys is reported. Periodic lattice distortions (PLD) along the ab plane diagonal, direction of superconducting transport at the transition temperature, $T_{c}$=107K are found to dominate the growth. Trransport induced by the PLD may be responsible for the sharp T$_{c}$ transitions, and the bursts of frequency and Abrikosov oscillations observed above the transition temperature up to 150K. Chemical synthesis in a heliostat oven was followed by fast quenching of the melt and annealing at 840-850K, XRD near the Cu K-edge, and T$_{c}$ measured by axial-torsional vibrations in transverse magnetic fields. T$_{c}$ and phaase purity obtained by green solid state chemistry, in a solar spectrum, will be discussed.
Authors
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J.V. Acrivos
San Jose State University
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D.D. Gulamova
Materials Science Institute SPA ``Physics-Sun'' Academy of Science, Uzbekistan
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J.G. Chigvinadze
E.Andronikashvili Institute of Physics, Tbilisi
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D. Loy
San Jose State UNiversity