Title :
Coaxial configuration of Bi-2212 textured ceramics: a possibility for improved current leads
Author :
Natividad, Eva ; Mora, Mario ; Diez, J.C. ; Peña, José I. ; García, Miguel ; Angurel, Luis A. ; Navarro, Rafael
Author_Institution :
Dept. de Ciencia y Tecnologia de Mater. y Fluidos, CSIC, Zaragoza, Spain
fDate :
3/1/2001 12:00:00 AM
Abstract :
The simultaneous improvement of the critical current and the minimization of the heat conductivity of thin Bi-2212 textured ceramics at high temperatures has been attempted on small diameter, thin walled superconducting tubes. Laser floating melting zone technologies have been used to fabricate cylindrical tubes of textured ceramic. Moreover, the feasibility of larger performances in current lead devices using a coaxial configuration of conductors with currents flowing in opposite directions has been experimentally and theoretically analyzed
Keywords :
bismuth compounds; calcium compounds; ceramics; copper compounds; high-temperature superconductors; strontium compounds; superconducting cables; surface texture; zone refining; Bi2Sr2CaCu2O8; Bi2Sr2CaCu2O8 HTSC textured ceramics; Laser floating melting zone technologies; coaxial configuration; critical current; current lead devices; heat conductivity; improved current leads; thin walled superconducting tubes; Ceramics; Coaxial components; Conducting materials; Conductors; Critical current; High temperature superconductors; Optical materials; Superconducting materials; Superconductivity; Thermal conductivity;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
