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Scientific article
English

Transport currents and magnetic properties of textured Bi(2223) tape

Published inSuperconductor Science and Technology, vol. 5, no. 4, p. 262-268
Publication date1992
Abstract

Magnetic and transport properties of textured Bi(2223) tape with high critical transport current density (jc(77 K, 0 T)=2.8*104 A cm-2) were studied. Magnetic measurements show nongranular behaviour of shielding and transport currents for the magnetic field orientation perpendicular to the tape plane B perpendicular to p at low temperatures and low fields. At high magnetic fields and temperatures, however, quite large differences were observed, which depend on magnetic field sweep rate B and voltage criteria Ec. This is connected with granularity and inhomogeneity of the current flow. It was established that the magnetic field dependence of the critical current has a general scaling behaviour: jc(B, B, T)=jc(0, B, T) f(B/B0(B, T)) where the scaling function f becomes exp(-B/B0) for B/B0>or=1. The scaling parameter B0 is proportional to the irreversibility field Birr. Both B0 and Birr show an exponential temperature dependence.

Citation (ISO format)
ZHUKOV, Andrei Aleksandrovich et al. Transport currents and magnetic properties of textured Bi(2223) tape. In: Superconductor Science and Technology, 1992, vol. 5, n° 4, p. 262–268. doi: 10.1088/0953-2048/5/4/011
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ISSN of the journal0953-2048
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