YBCO film with Sm addition using low-fluorine TFA-MOD approach

Authors

Dongqi Shi, University of WollongongFollow
Lin Wang, University of WollongongFollow
Jung Ho Kim, University of WollongongFollow
Xuebin Zhu, University of WollongongFollow
Min Liu, University of WollongongFollow
Qi Li, University of WollongongFollow
Rong Zeng, University of WollongongFollow
Jyhuan Ahn, University of Wollongong
S. X. Dou, University of WollongongFollow
J. Y. Yoo, Korea Institute of Machinery and Materials
Y. K. Kim, Korea Institute of Machinery and Materials
T. Yamashita, Mesaplexx Pty. Ltd.
John Barry, Mesaplexx Pty. Ltd.
Richard Taylor, Mesaplexx Pty. Ltd.

RIS ID

31501

Publication Details

Shi, D., Wang, L., Kim, J., Zhu, X., Liu, M., Li, Q., Zeng, R., Ahn, J., Dou, S. Xue., Yoo, J. Y., Kim, Y. K., Yamashita, T., Barry, J. Taylor, R. (2009). YBCO film with Sm addition using low-fluorine TFA-MOD approach. IEEE Transactions on Applied Superconductivity, 19 (3), 3208-3211.

Abstract

Yttrium barium copper oxide (YBCO) film was synthesized by a metal-organic deposition (MOD) process with fluorine-free Y and Cu precursor. The precursor solution with Sm addition enabled further improvement of the thickness and uniformity of precursor films. The calcination and firing processes were studied, and the precursor film was successfully converted to dense and uniform YBCO film on LaAlO₃ (LAO) substrate after annealing in a wet Ar and O₂ atmosphere. The measured critical current density (J _c) value was about 80 A/cm-w (2.66 MA/cm²). The trifluoroacetate (TFA) reduced MOD process has the advantage that it has a larger tolerance for variations in the gas flow rate and path. The results on a Sm-YBCO film deposited on LAO with a CeO² buffer layer fabricated by MOD are also presented.