TY - JOUR
T1 - Crystal growth of ba concentration controlled ybco films by tfa-mod process
AU - Teranishi, Ryo
AU - Tada, K.
AU - Yoshida, J.
AU - Yamada, K.
AU - Mori, N.
AU - Mukaida, M.
AU - Nakaoka, K.
AU - Miura, M.
AU - Yoshizumi, M.
AU - Izumi, T.
AU - Shiohara, Y.
N1 - Funding Information:
Manuscript received August 16, 2008. First published June 30, 2009; current version published July 15, 2009. This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) through International Superconductivity Technology Center (ISTEC) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications and by The Murata Science Foundation. Corresponding author: R. Teranishi (e-mail: [email protected]).
PY - 2009/6
Y1 - 2009/6
N2 - 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
AB - 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
UR - https://www.scopus.com/pages/publications/68649120854
UR - https://www.scopus.com/pages/publications/68649120854#tab=citedBy
U2 - 10.1109/TASC.2009.2017958
DO - 10.1109/TASC.2009.2017958
M3 - Article
AN - SCOPUS:68649120854
SN - 1051-8223
VL - 19
SP - 3200
EP - 3203
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 3
M1 - 5153151
ER -