Title :
Critical current densities and voltage-current characteristics in Ag-sheathed Bi-2223 tapes
Author :
Mawatari, Y. ; Yamasaki, H. ; Kosaka, S.
Author_Institution :
Electrotech. Lab., Ibaraki, Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
Magnetic field and temperature dependence of the critical current density and voltage-current characteristics of Bi-2223 tapes in the magnetic field parallel to the c-axis are studied. The power-law dependence of the critical current density on the magnetic field at low fields suggests the brickwall model, and the magnetic field dependence of the macroscopic pinning force density shows clear scaling behavior at high temperatures. Furthermore, we performed the critical scaling analysis for voltage-current characteristics based on the vortex-glass-liquid transition theory.<>
Keywords :
bismuth compounds; calcium compounds; critical current density (superconductivity); flux pinning; high-temperature superconductors; silver; strontium compounds; superconducting tapes; Ag-BiSrCaCuO; Ag-sheathed Bi-2223 tapes; brickwall model; critical current densities; critical scaling analysis; high temperature superconductors; low fields; macroscopic pinning force density; magnetic field dependence; power-law dependence; scaling behavior; temperature dependence; voltage-current characteristics; vortex-glass-liquid transition theory; Critical current; Critical current density; Current measurement; Electrical resistance measurement; High temperature superconductors; Magnetic field measurement; Magnetic fields; Superconducting films; Temperature dependence; Voltage;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
