Small field behaviour of critical current in Y(1)Ba(2)Cu(3)O(7) sintered samples
Critical currents carried by sintered Y(1)Ba(2)Cu(3)O(7) superconducting samples have been measured at different temperatures close to the critical temperature . The effects of an applied magnetic field perpendicular to the current direction have been investigated. A strong reduction of the dc critical current for field values smaller than the lower critical field has been observed. The magnetic field dependence is discussed in terms of weak coupling between grains. The experimental data show an excellent agreement, at low field values, with the theoretical dependence valid for a Josephson junction with strong inhomogeneities in the barrier.
Bibliographic Reference: Report: RT/FUS/87/27 EN (1987)
Availability: Available from Servizio Studi e Documentazione, ENEA, Centro Ricerche Energia Frascati, C.P. 65-00044 Frascati, Roma (IT)
Record Number: 198910061 / Last updated on: 1994-12-01
Original language: en
Available languages: en