Title :
DC critical currents in superconducting ceramic samples of Y1 Ba2Cu3O7
Author :
Paterno, G. ; Alvani, C. ; Casadio, S. ; Gambardella, U. ; Maritato, L.
Author_Institution :
ENEA-CREA Frascati, Italy
fDate :
3/1/1989 12:00:00 AM
Abstract :
DC transport critical currents have been measured on Y1Ba2Cu3O7 pellets, sintered under different conditions. Samples with a density ranging from 3.8 to 5.42 g/cm3 have been investigated. The magnetic-field dependence of the critical current has been measured at liquid-nitrogen temperature. High-density samples, sintered at temperatures exceeding 950°C, exhibit lower critical-current densities and a stronger dependence on a weak magnetic field
Keywords :
barium compounds; ceramics; critical current density (superconductivity); density of solids; high-temperature superconductors; sintering; yttrium compounds; 77 K; 950 degC; DC critical currents; Y1Ba2Cu3O7; density; high temperature superconductors; magnetic-field dependence; sintering; superconducting ceramic samples; Ceramics; Conductivity; Critical current; Current measurement; Density measurement; Electrical resistance measurement; Fabrication; Temperature measurement; Thermal variables measurement; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
