The preparation and characterization of Bi-2212 film on Ag substrate by dip-coating method

摘要

In this paper we report on the processing parameters and resulting critical current densities of Bi2Sr2Ca1Cu2Ox thick films on Ag substrate. Bi-2212 tapes and wires are prepared by dip-coating method. It is found that parameters during partial melting (maximum process temperature T-max and solidification temperature T-s) have strong influences on the transition temperature T-c. The 0.5 mm diameter dipcoated wire can carry 4000 A/cm(2) critical current in 77 K, self field. Post-annealing on different temperatures and atmospheres are studied as well to obtain varied Tc samples. (c) 2006 Elsevier B.V. All rights reserved.