Effect of Filament Configuration on Critical Current Density of Bi2212/Ag Wires With Low Ag Ratio

Author

Kim, Sang-Cheol ; Ha, Dong-Woo ; Oh, Sang-Soo ; Han, Il-Yong ; Oh, Jae-Geun ; Sohn, Ho-Sang

Author_Institution

Nexans Korea Ltd., Cheongwon

Volume

18

Issue

2

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

1188

Lastpage

1191

Abstract

Effect of filament configuration and heat treatment of Bi2212/Ag round wire with low Ag ratio on the engineering critical current density (J_e) was reported. We have fabricated 557, 85 7, and 121 7 wires with different Ag ratio and evaluated at various wire diameters. We have also changed the parameters of heat treatment. The effects of maximum process temperature (T_max)and soaking time at T_max and average filament diameter on the J_e were also studied. 121 7 wire of 0.95 mm diameter heat-treated at showed J_e of 858mm² at 4.2K, 0 T.

Keywords

bismuth compounds; calcium compounds; critical current density (superconductivity); heat treatment; high-temperature superconductors; lead compounds; silver; strontium compounds; Bi2212/Ag wires; BiPbSr₂Ca₂Cu₃O₁₀-Ag; critical current density; filament configuration; heat treatment; magnetic flux density 0 T; maximum process temperature; soaking time; temperature 4.2 K; Bi2212/Ag wire; critical current density; multi-filamentary wire; powder-in-tube;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2008.920765

Filename

4519992