High-<i>J</i>_<i>c</i>YBa₂Cu₃O_7-<i>x</i>films on metal tapes by the metalorganic deposition method using trifluoroacetates

Abstract

High-Jc YBa2Cu3O7-x (YBCO) films on metal tapes have been successfully fabricated by the metalorganic deposition method using trifluoroacetates (TFA-MOD method) with optimal firing conditions. In the firing process, the key factors by which to obtain high-Jc YBCO films on metal tapes are to prevent the films from deterioration by water vapour and to avoid BaCeO3 creation between YBCO and the CeO2 buffer layer. With the optimal conditions, we have successfully formed a 0.24 µm thick YBCO film on a metal tape, having a Jc of 2.5 MA cm-2 (77 K, 0 T).