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Low-Thermal-Conductive \rm DyBaCuO Bulk Superconductor for Current Lead Application

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4 Author(s)
Fujishiro, H. ; Fac. of Eng., Iwate Univ., Morioka ; Ikebe, M. ; Teshima, H. ; Hirano, H.

The thermal conductivity kappa(T), thermal diffusivity alpha(T) and thermal dilatation dL(T)/L of the DyBaCuO bulk superconductor have been measured. The ab-plane kappa of the bulk at 50 K is about one third of that of the YBaCuO bulk, and moreover, the superconducting characteristics (critical current density Jc and superconducting transition temperature Tc) compare favorably with those of the YBaCuO bulk. The current-voltage (I-V) characteristics of the current lead fabricated from DyBaCuO bulk and the durability against the thermal quenching are as good as those of the YBaCuO lead. The DyBaCuO bulk is a promising material for the power current lead use to be replaced for the YBaCuO bulk

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:16 ,  Issue: 2 )

Date of Publication:

June 2006

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