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

Author

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 J_c and superconducting transition temperature T_c) 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

Low-Thermal-Conductive Bulk Superconductor for Current Lead Application

Fujishiro, Hiroyuki ; Ikebe, Manabu ; Teshima, Hidekazu ; Hirano, Hosei

jour

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