Intercalation process of Bi2Sr2Ca1Cu2O8+δ, Ca2CuO3 and CuO in sedimentation films via X-Ray diffraction

Abstract

This study is the first attempt to establish a 2223 formation route by intercalating 2212, Ca₂CuO₃ and CuO on sedimentation films. A two-step heat treatment process was used to fabricate films which involves melting and quenching. After post-annealing, peaks are carefully indexed mostly to 2201, 2212, 2223, even 2234, and some non-superconducting phases. The highest amount of 2223 (∼60%) was observed when films melted at 970◦C for 15 minutes are post-annealed at 860◦C for 100 hours and then quenched. Films melted at 870◦C-895◦C temperature range and post-annealed after 100 hours yields more 2212 phase which implies sluggish 2223 formation. The presence of 2234 phase raises the degree of complexity in forming 2223 phase via intercalation process.