SUPERCONDUCTING THIN-FILMS OF BI-SR-CA-CU-O OBTAINED BY LASER ABLATION PROCESSING

Thin films of Bi-Sr-Ca-Cu-O, deposited on (100) cubic zirconia by laser ablation from a bulk superconducting target of nominal composition BiSrCaCu2 Ox, have been investigated by dc resistance and magnetically modulated microwave absorption measurements. The latter technique reveals important features regarding the phase purity of superconducting samples that are masked in the de resistance measurements. The superconducting behavior of the films, as a function aftne substrate temperature during deposition and the post-deposition annealing conditions, is discussed.