| Superconducting thick film of Bi-Pb-Sr-Ca-Cu-O system with the (001) texture of 2212 phase was prepared by the melt texture growth method(Tc=77-80K). The superconducting thick film was formed by the screen printing method on the silver substrate, and the growth of the (001) texture with respect to the condition of heat treatments was investigated. In the melt texture growth, all step of the heat treatment-melting, slow cooling and post annealing were essential for the (001) texture growth. Especially during the post annealing degree of (001) texture growth was conspicuous. Thus prepared thick films showed higher critical current density than the sintered bulk superconductor. The post annealed samples (845℃, 50hrs) showed the critical density of 2100 A/㎠, which was considerbly higher than the sintered bulk superconductor(∼10² A/㎠). (001) texture developed during the post annealing was thought to be responsible for such high value of current density in this thick film. |
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