Synthesis and phase evolution of LiNb_(0.6)Ti_(0.5)O_3 powder via a sol-gel method  

作　　者：Xia Wang Wei Li Jianlin Shi 

机构地区：[1]School of Materials Science and Engineering, East China University of Sdence and Technology, 130 Meilong Road, Shanghai 200237, China [2]Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China

出　　处：《Particuology》2010年第5期463-467,共5页颗粒学报（英文版）

摘　　要：A simple sol-gel route was demonstrated for the synthesis of LiNb0.6Ti0.5O3 （M-phase） powder, using cheap and manageable starting materials at a relatively low temperature. The phase transitions in both chemical and solid-state processes were studied by X-ray diffraction （XRD） in detail. The results showed that in the sol-gel process the anatase TiO2 phase first appeared at 400 ℃ and then LiNbO3 solid solution （LiNbO3 55） emerged at 500 ℃. When calcined to 600 ℃, the M-phase started to appear along with the decrease of TiO2 and LiNbO3 ss. Single M-phase could be formed at 700℃, which is 300 ℃ lower than that by the traditional solid-state method. A plausible evolution mechanism of the as-synthesized powder in calcination was proposed. The produced powder has potential applications in microelectronics systems.A simple sol-gel route was demonstrated for the synthesis of LiNb0.6Ti0.5O3 （M-phase） powder, using cheap and manageable starting materials at a relatively low temperature. The phase transitions in both chemical and solid-state processes were studied by X-ray diffraction （XRD） in detail. The results showed that in the sol-gel process the anatase TiO2 phase first appeared at 400 ℃ and then LiNbO3 solid solution （LiNbO3 55） emerged at 500 ℃. When calcined to 600 ℃, the M-phase started to appear along with the decrease of TiO2 and LiNbO3 ss. Single M-phase could be formed at 700℃, which is 300 ℃ lower than that by the traditional solid-state method. A plausible evolution mechanism of the as-synthesized powder in calcination was proposed. The produced powder has potential applications in microelectronics systems.

关 键 词：M-phaseSol-gel processPhase transitionX-ray diffraction 

分 类 号：TQ174.758[化学工程—陶瓷工业] O734.1[化学工程—硅酸盐工业]