Title :
Estimation of stability and critical current density of oxide superconducting wires
Author :
Nishijima, S. ; Takahata, K. ; Okada, T. ; Sakai, Y. ; Ikisawa, K. ; Mori, T. ; Takasu, N. ; Ikeda, K. ; Ueminami, K.
Author_Institution :
ISIR Osaka Univ., Japan
fDate :
3/1/1989 12:00:00 AM
Abstract :
The critical-current density of the high-Tc oxide superconductor, YBa2Cu3O7-x (YBCO), has been measured changing the temperature down to liquid-nitrogen temperature (LNT) in order to estimate the adiabatic and cryogenic stabilities at LNT. In estimating the critical-current density, both four-terminal and magnetization measurements were made. The specific heat was also measured. The adiabatic stability was found to be much higher than that of conventional superconductors at liquid-helium temperature. The cryogenic stability, however, is found to be poor
Keywords :
barium compounds; critical current density (superconductivity); high-temperature superconductors; magnetisation; specific heat of solids; yttrium compounds; 77 K; YBa2Cu3O7-x; adiabatic stability; critical current density; cryogenic stabilities; four terminal measurements; high temperature superconductors; high-Tc oxide superconductor; magnetization; oxide superconducting wires; specific heat; stability; Critical current density; Cryogenics; Current measurement; High temperature superconductors; Magnetic field measurement; Multifilamentary superconductors; Stability; Superconducting filaments and wires; Superconducting magnets; Yttrium barium copper oxide;
Journal_Title :
Magnetics, IEEE Transactions on
