Dynamic heat treatment of BSCCO-2212 tapes with homogeneous properties and high critical current density

Superconducting critical current of a singleCu2O4plane in aBi2You1, Yurgens2, Winkler3 2005Phys. Rev. B

“…This is also consistent with early suggestions on BKT-type phase transition of the layered HTS. 25,26,27 Still, the values that we obtain, are among the largest ever observed for BSCCO, both in thin films 19,20 , single crystals 13,14,15,16 , and tapes 17,18 . Remarkably, our results are even larger than for whiskers 15,16 .…”

“…Although being quite reasonable, this value is among the largest ever observed in other J c ab measurements 13,14,15,16,17,18,19,20 . In order to model the dynamics of current flow through the SIJJ, we assume quite arbitrarily the following form of the voltage drop across the ab plane at the bridge between the two regions:…”

Magnetic Texturing of High-Tc Superconductors

“…E. Flahaut demonstrated in his PhD the possibility to texture highly homogeneous Bi2212 tapes by moving the tape in the furnace and using a continuous melting process with large critical currents (Jc = 230kA/cm 2 at 4.2K, self field) [33]. It was shown that the critical current density can be improved with this method compared to a standard static heat treatment.…”

First Tests of a 800 kJ HTS SMES

“…The conductor basic element is a Bismuth PIT tape with the 2212 stoichiometry (Bi Sr CaCu O-Bi-2212) produced by Nexans [6]. This tape imposes an operation around 20 K. Fig.…”