YBa2Cu3O7-δ(YBCO) films were deposited with a low-fluorine modified trifluoroacetate metalorganic deposition (TFA-MOD) method on SrTiO3 single crystals and buffered Ni-W metallic tape with a thickness ranging from 450 to 600nm. The method consists in the substitution of yttrium and copper trifluoroacetates with Cu and Y acetates dispersed in propionic acid. A reduced pyrolysis time with respect to the usual TFA method is obtained. Apart from CuO, no traces of second phases are revealed by x-ray measurements. The films are compact without cracks, and exhibit a slight superficial porosity, but they still remain well connected, and therefore the observed porosity does not affect either the critical current density or the normal state resistivity values, which are indicative of high-quality YBCO films. Moreover, YBCO films were also obtained on Pd-buffered Ni-W, with a CeO2/YSZ/CeO2 buffer layer architecture. These films show good morphological, structural, and superconductive properties with high critical temperature (higher than 91K) and critical current density higher than 1MAcm-2 at 77K in self-field. © 2008 IOP Publishing Ltd.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Ceramics and Composites
- Materials Chemistry
- Metals and Alloys
Armenio, A. A., Augieri, A., Ciontea, L., Contini, G., Davoli, I., Galluzzi, V., ... Celentano, G. (2008). Characterization of epitaxial YBa2Cu3O 7-δ films deposited by metal propionate precursor solution. Superconductor Science and Technology, 21(12), -. . https://doi.org/10.1088/0953-2048/21/12/125015