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Transport study of Hg-based high temperature superconductors

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4 Author(s)
Pekala, M. ; Dept. of Chem., Warsaw Univ., Poland ; Bougrine, H. ; Sargankova, I. ; Ausloos, M.

Polycrystalline superconductors Hg1Ba2Ca2Cu3O8+δ were synthesized from oxides by the solid state reaction. Thermoelectric power, thermal conductivity and electrical resistivity of the Hg-based high temperature superconductors were measured in a broad temperature range between 20 and 300 K. The influence of magnetic fields up to 0.35 T was also studied. The superconducting transition starts at about 136 K and is completed in a relatively narrow temperature interval as revealed by thermoelectric power and resistivity measurements. The transition interval broadens in a magnetic field. The experimental data are used to determine and discuss the figure of merit for the Hg1223 superconductor. The figure of merit increases in an external small magnetic field

Published in:

Thermoelectrics, 1997. Proceedings ICT '97. XVI International Conference on

Date of Conference:

26-29 Aug 1997