Transformation of Bi1.6Pb0.4Sr2Ca2Cu3O10+δ films deposited on (110) MgO due to melting, quenching and post-annealing

Abstract

We reported the transformation of Bi_1.6Pb_0.4Sr₂Ca₂Cu₃O_10+δ films on (110) polished MgO deposited using Sedimentation technique due to partial melting and post-annealing. All of the superconducting phases of BSCCO were present after partial melting at 970^â—¦C as indicated by XRD. It was found that post annealing at 860^â—¦C for 100 hours with immediate quenching helps promote Bi-2223 formation from ∼ 60% up to ∼ 90%. A number of (00â„“) peaks corresponding to Bi-2223 were present after post-annealing. XRD also revealed an intermediate phase as a result of heat treatment at high temperature as (Sr,Ca)-Cu-O phase. Critical temperature ∼ 110K were obtained corresponding to the Bi-2223 phase.