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THE preparation of high-temperature superconducting (HTSC) wires or tapes is very important for the power application of HTSC. High-J_c properties of Y-Ba-Cu-O thin film at liq uid-nitrogen temperature are very attractive not only for small-sized electronic devices, but also for large-scale applications such as high-power transmission cables, high-field magnets and large-scale microwave components. Large-current power application would be achieved if high-J_c YBCO films were grown on practical cheap and flexible metallic substrates. An yttria-stabi-
High-J_c properties of Y-Ba-Cu-O thin film at liq uid-nitrogen temperature are very attractive not only for small -sized electronic devices, but also for large-scale applications such as high-power transmission cables, high-field magnets and large-scale microwave components. Large-current power applications would be if high-J_c YBCO films were grown on practical cheap and flexible metal substrates. An yttria-stabi-