Low-Temperature Sintering of Garnet-Type LiLa₃Zr₂O Solid Electrolyte with Li₃BO₃ Additive Prepared by Polymeric Complex Method.

In this study, a Li₃BO₃ (LBO) compound is synthesized via the heat-treatment of polymeric precursors containing Li and B in air at 700 °C for 5 h to use as a sintering additive for the densification of LiLa₃Zr₂O (LLZ) solid electrolyte. The synthesized LBO powder is suitable for promoting the densification, cubic phase stability, and ionic conductivity of LLZ. X-ray diffraction analysis indicated that monophasic cubic LLZ could be obtained by the addition of LBO in sintering, changing to cubic LLZ phase from LZ impurities detected in raw LLZ.

Ferromagnetism and Ru-Ru distance in SrRuO3 thin film grown on SrTiO3 (111) substrate.

Epitaxial SrRuO3 thin films were grown on both (100) and (111) SrTiO3 substrates with atomically flat surfaces that are required to grow high-quality films of materials under debate. The following notable differences were observed in the (111)-oriented SrRuO3 films: (1) slightly different growth mode, (2) approximately 10 K higher ferromagnetic transition temperature, and (3) better conducting behavior with higher relative resistivity ratio, than (100)c-oriented SrRuO3 films. Together with the reported results on SrRuO3 thin films grown on (110) SrTiO3 substrate, the different physical properties were discussed newly in terms of the Ru-Ru nearest neighbor distance instead of the famous tolerance factor.