Processing dependence of texture development in La[sub 2]Zr[sub 2]O[sub 7] buffer layer by sol-gel technique for YBCO coated conductors

1 January 2002

proceedings article
Published by AIP Publishing in AIP Conference Proceedings

Vol. 614 (1) , 503-510
https://doi.org/10.1063/1.1472579

Abstract

Perovskite textured La 2 Zr 2 O 7 (LZO) films were deposited on Ni tapes using sol-gel process for fabrication of second generation high- T c superconductors. LZO solutions were derived from acetate and alkoxide precursors. The effects of precursors, solvents, chelating agents, and annealing conditions (temperature and time), on epitaxial growth of LZO were investigated by XRD, SEM, EDS, and X-ray pole figure analysis. It was found that texture of LZO depended on, solution preparation, and annealing conditions. Textured, homogenous, dense, crack free and pinhole free, LZO films were produced on textured Ni tapes by postannealing at 1150 °C for 10 min under 4% H 2 - Ar gas flow when lanthanum (III) 2-methoxyethoxide precursor and 2-methoxyethanol solvent were used. When lanthanum acetate precursor and trifluoroacetic acid were used, texture was obtained at 1160 °C for 40 min annealing conditions.

Keywords

This publication has 0 references indexed in Scilit: