DocumentCode :
973785
Title :
Low-Thermal-Conductive 
Bulk Superconductor for Current Lead Application
Bulk Superconductor for Current Lead ApplicationAuthor :
Fujishiro, Hiroyuki ; Ikebe, Manabu ; Teshima, Hidekazu ; Hirano, Hosei
Author_Institution :
Fac. of Eng., Iwate Univ., Morioka
Volume :
16
Issue :
2
fYear :
2006
fDate :
6/1/2006 12:00:00 AM
Firstpage :
1007
Lastpage :
1010
Abstract :
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
Keywords :
barium compounds; critical current density (superconductivity); dysprosium compounds; high-temperature superconductors; quenching (thermal); superconducting transition temperature; thermal conductivity; thermal diffusivity; 50 K; DyBaCuO; bulk superconductor; critical current density; current lead application; current-voltage characteristics; durability; heat intrusion; power current; superconducting characteristics; superconducting transition temperature; thermal conductivity; thermal diffusivity; thermal dilatation; thermal quenching; Conductivity measurement; Critical current density; Fluid flow measurement; Helium; Steel; Strain measurement; Superconducting materials; Superconducting transition temperature; Thermal conductivity; Thermal quenching; heat intrusion; low thermal conductivity; power current lead; thermal dilatation;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2006.871305
Filename :
1643018
Link To Document :
