Growth and Magnetotransport Characteristics of AIrO3 (A=Ca, Ba, Sr) Incorporated Bi2Sr2 CaCu2O \(\boldsymbol }}\) Superconducting Films

We successfully grew AIrO 3 (A = Ca, Ba Sr) incorporated Bi 2 Sr 2 CaCu 2 O 8+δ (BSCCO) films using pulsed laser deposition technique with post-growth ex situ treatment. The incorporation was accomplished by initially growing AIrO 3 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.