L. Porcar et al., TRANSPORT CURRENTS ALONG C-AXIS AND (A,B) PLANES IN YBCO SINGLE-DOMAIN MATERIALS - CRITICAL-CURRENT DENSITIES AND NORMAL-SUPERCONDUCTING TRANSITIONS, Materials science & engineering. B, Solid-state materials for advanced technology, 53(1-2), 1998, pp. 189-192
High transport currents along the (a,b) planes and along the c-axis ha
ve been measured in pulsed current of different pseudo-frequencies. Se
lf field losses and transport current of 8000 A (20 000 A cm(-2)) have
been measured in Y1Ba2Cu3O7-delta bars textured by the melting zone t
echnique. Critical currents as high as 500 A (90 000 A cm(-2)) along t
he (a,b) planes or 3000 A (7500 A cm-2) along the c-axis have been mea
sured. For both orientations, the transition from the normal state to
the superconducting state has been observed. Electric field of 1000 V
m(-1) and study of the superconducting state recovery are reported. (C
) 1998 Elsevier Science S.A. All rights reserved.