Enhancement of Ionic Conductivity in La2Mo2O9-Based Nanocrystalline Films Synthesized by a PVP Assisted Sol-Gel Method
High-quality 5% W- and Gd-doped La2Mo2O9 nanocrystalline films were successfully synthesized on poly-alumina substrates via a PVP-assisted sol-gel method with inorganic salts as precursors, combined with the rapid thermal annealing and novel three stages annealing procedures. Dense and uniform La2Mo2O9-based films with 90 nm in grain size and 1 μm in thickness were obtained by only twice spin coatings and sintering at 600 oC. The electrical conductivity of the films at 600 oC reaches 0.028 and 0.025 S/cm for W- and Gd-doped samples, respectively.
Yuan Ming Huang
Z. Zhuang et al., "Enhancement of Ionic Conductivity in La2Mo2O9-Based Nanocrystalline Films Synthesized by a PVP Assisted Sol-Gel Method", Materials Science Forum, Vols. 663-665, pp. 633-636, 2011