알코올계 이용한 YBCO 초전도 전기영동전착막의 제작

Preparation of Electrophoretic deposited YBCO superconducting film with alcohol-based suspension

In electrophoresis, it is studied to get best condition of suspension media with alcoholic system for superconducting film. High-temperature superconductor films of $YBa_{2}Cu_{3}O_{7-x}$ were fabricated by electrophoretic deposition(EPD) from alcohol-based suspension. Maximum stability is observed for the suspension containing iso-alcohol as dispersion medium. However, for the formation of a dense and adherent coating of YBCO on a silver substrate by EPD. the best results were obtained in mixing PrOH and BuOH suspension. The superconducting critical current density($J_c$) was $1,200A/cm^2$ for the films deposited in 30% iso-PrOH and 70 % iso-BuOH suspension.