Chemical modification of precursor solution for long length YBCO coated conductor fabrication

Authors

Jaimoo Yoo, Korea Institute of Machinery and MaterialsFollow
Young-Kuk Kim, Korea Institute of Machinery and Materials
Kookchae Chung, Korea Institute of Machinery and Materials
Jaewoong Ko, Korea Institute of Machinery and Materials
Gye-Won Hong, Korea Polytechnic UniversityFollow
Hee-Gyoun Lee, Korea Polytechnic University
Jin-Heung Kim, Ewha Women’s University
Hyungsik Chung, Ajou University
X. L. Wang, University of Wollongong
S. X. Dou, University of WollongongFollow

RIS ID

14236

Publication Details

Yoo, J., Kim, Y.-K., Chung, K., Ko, J., Hong, G.-W., Lee, H.-G., Kim, J.-H., chung, H., Wang, X. L., Dou, S. X. (2006). Chemical modification of precursor solution for long length YBCO coated conductor fabrication. Journal of Physics: Conference Series 43 (pp. 211-214). London, UK: Institute of Physics Publishing.

Abstract

Long length MOD processing of YBCO conductor requires high performance precursor solution without degradation during the process. In this study, effect of chemical modification of precursor solution on MOD processing was investigated to meet the requirement. Highly stable YBCO precursor solution was synthesized with PVP (polyvinylpyrrolidone) and crack-free thick precursor film was successfully fabricated. However, annealed YBCO film shows porous microstructures originated from large HF gas generation from thick films and residual carbon from additives. Reduction of fluorine content is required to densify microstructures. In order to reduce fluorine content, F-free Cu-precursor solution was synthesized. YBCO film with J_c = 0.8MA/cm² was grown on buffered RABiTS tape. Annealed YBCO film still contains pores and further reduction of pores is required to improve critical current (I_c)