Growth and Magnetotransport Characteristics of AIrO3 (A=Ca, Ba, Sr) Incorporated Bi2Sr2 CaCu2O

We successfully grew AIrO₃ (A = Ca, Ba Sr) incorporated Bi₂ Sr₂ CaCu₂O_8+δ (BSCCO) films using pulsed laser deposition technique with post-growth ex situ treatment. The incorporation was accomplished by initially growing AIrO₃ iridate nanoparticles on top of a single crystal MgO (100) substrate followed by a BSCCO layer. The composite film was then partial melted at 890 °C for 15 min and annealed at 850 °C for 5 h in ambient air. In this way, we controlled the type of iridate nanoparticles, which were embedded inside the superconducting BSCCO matrix. We observed that the superconducting transition temperature T_c-zero, activation energy U_o, and magnetoresistance can be tuned depending on the type of iridate incorporation.