@article{SisLab1254,
          volume = {4},
          number = {4},
           title = {Annealing Effect on the Ionic conductivity of La0,67-xLi3xTiO3 made by Double Mechanical Alloying Method},
          author = {Dinh Trong Le and Nang Dinh Nguyen and Duy Long Pham},
            year = {2014},
           pages = {86--94},
         journal = {Journal of Materials Science and Engineering B},
             url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/1254/},
        abstract = {Perovskite La2/3-xLi3xTiO3 with x = 0.11 (called LLTO11) powders were prepared by double mechanical alloying method from TiO2 (99.99\%), Li2CO3, (99.99\%) and La2O3 (99.9\%) powders, in ideal cation stoichiometry for La2/3-xLi3xTiO3. The obtained single phase of LLTO11 powder was isostatically pressed under a pressure of 450 MPa and annealed at a temperature ranging from 1,100 ?C to 1,250 ?C. Optimal morphology and grain structure for the ionic conductivity of the samples were achieved at annealing
temperature of 1,200 ?C. For this ceramic, the lithium ionic grains and grain-boundaries conductivities at room temperature possess a value of 1.5 {$\times$} 10-3 S/cm and 4.8 {$\times$} 10-5 S/cm, respectively. The improvement in the grain-boundaries conductivity was explained due to the decrease of the number of grains, included grain boundaries and the diminution of the pores in LLTO samples annealed at 1,200 ?C. The obtained results suggest useful applications of La(2/3)-xLi3xTiO3 (x = 0.11) ceramics for the production of the solid state electrolytes,for high-temperature Li-ionic batteries, in particular.}
}