Speaker
Mr
Shatchai Promsuy
(Department of Physics, Faculty of science, Khon Kaen University, 40002 Khon Kaen, Thailand)
Description
$\rm La_{0.56}Sr_{0.4}Co_{0.2}Fe_{0.8}O_3$-$\delta$ (LSCF) thin films were fabricated on a yttrium stabilized zirconia (YSZ) pellet from either solutions containing LSCF suspension or LSCF sol gels. The suspensions and gel precursors were applied on the substrate via a conventional spraying and a dip coating, respectively. The LSCF films and the YSZ substrates were co-fired at 1100 $^o$C. From SEM, the gel-derived films showed a densely-packed structure whilst the films prepared from suspended LSCF did not have such characteristics. The electrochemical impedance spectra unambiguously implied the better film-substrate interface for the gel-derived films as their interfacial resistivities were lower than those prepared by the suspension spray routes.
Author
Mr
Shatchai Promsuy
(Department of Physics, Faculty of science, Khon Kaen University, 40002 Khon Kaen, Thailand)
