Crystal growth of ba concentration controlled ybco films by tfa-mod process

Ryo Teranishi, K. Tada, J. Yoshida, K. Yamada, N. Mori, M. Mukaida, K. Nakaoka, M. Miura, M. Yoshizumi, T. Izumi, Y. Shiohara

研究成果: ジャーナルへの寄稿記事


YBCO films grown by the starting solution with Ba-poor (cation ratio asY:Ba:Cu = l:1.5:3) have been reported to have higher Jc than that for YBCO films with stoichiometric composition due to smaller and less pores in TFA-MOD YBCO. In this study, Ba concentration in the Ba-poor YBCO films was controlled in film thickness direction, and influences of the Ba concentration gradient on microstructures and Jc properties were investigated to realize higher Jc. Precursor films with Ba-poor composition and with Ba-rich composition in the thickening direction were prepared and then the films were crystallized. Increasing the Ba concentration in thickening direction led to higher Jc than that of Ba-poor YBCO. Cross sectional TEM observations showed that the effective YBCO thickness increased for YBCO film with higher Ba concentration in comparison to the previous Ba-poor YBCO film

ジャーナルIEEE Transactions on Applied Superconductivity
出版物ステータス出版済み - 6 1 2009


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering