Abstract: | In this work, we intend to investigate the interaction between two types of nanoscaled artificial pinning centers and their
pinning properties in YBCO thin films grown by pulsed laser deposition technique. The two types of artificial pinning centers
were prepared in different processes, (1) Y2O3 nanoislands decorated on substrates prior to the deposition of YBCO thin film, and (2) BaZrO3 nanoparticles self-assembled within YBCO matrix during the deposition of YBCO thin film. We compared the transport characteristics
of the YBCO thin films containing these two types of artificial pinning centers with those of pure YBCO thin films grown on
decorated substrates and BZO-doped YBCO thin films grown on undecorated substrates. It was found that these two types of artificial
pinning centers, which are simultaneously present, acted constructively to enhance the pinning properties of YBCO thin films. |