Fabrication of Superconducting YBa2Cu4O8 Film via Coprecipitation

Authors :: Yoshihiko Takano
Ryo Matsumoto
Hiroyuki Takeya
Yoshito Saito
Hiroshi Hara
Shintaro Adachi
Publication Year :: 2019
Publisher :: arXiv, 2019.
Abstract: We have successfully synthesized the c-axis oriented YBa2Cu4O8 (Y-124) film on a SrTiO3 (1 0 0) substrate via a coprecipitation and a dip-coating method. The precipitations including Y, Ba and Cu ions were obtained using their metal nitrates solution and the aqueous solution of sodium hydroxide and oxalic acid. Superconducting transition of the synthesized film was observed at 64-70 K corresponding to bulk Y-124 in the magnetization and resistance measurement. The developed method is suitable to synthesize superconducting Y-124 films for technological applications.<br />Comment: 7 pages, 6 figures