LASER ABLATION DEPOSITION OF SUPERCONDUCTING BI-SR-CA-CU-O THIN-FILMS ON ZIRCONIA-BUFFERED CRYSTALLINE QUARTZ

Thin films of Bi-Sr-Ca-Cu-O have been deposited on crystalline quartz substrates by laser ablation. Without a buffer layer, snperconducting regions exist in the films as detected by magnetically modulated microwave absorption. However, with a WOO-A zirconia buffer layer, also deposited by laser ablation, continuous, superconducting thin films were obtained. It is shown that both annealing temperature and annealing ti.me greatly affect the fUm quality.