Effects of Sintering Temperature on the Structure and Conductivity of LiSn2P3O12 Prepared by Mechanical Milling Method
LiSn2P3O12 has been prepared using mechanochemical milling method and sintered at 700 °C, 800 °C, 900 °C and 1000 °C for 8 hours. All samples sintered up to 900 °C show a rhombohedral structure. However, the sample sintered at 1000 °C possessed a monoclinic structure. This is attributed to the rotation of skeleton LiSn2P3O12 as indicated by the change in the a and c parameters of the sample. The sample sintered at 700 °C shows the highest bulk conductivity of 1.65 × 10-6 S cm-1 and the lowest bulk activation energy of 0.09 eV. The grain boundary activation energy of the samples decreases with increase in sintering temperature due to enhancement in grain contacts.
Xie Yi and Li Mi
R. Norhaniza et al., "Effects of Sintering Temperature on the Structure and Conductivity of LiSn2P3O12 Prepared by Mechanical Milling Method", Advanced Materials Research, Vols. 129-131, pp. 338-342, 2010