Synthesis and phase evolution of LiNb0.6Ti0.5O3 powder via a sol

Wang, X., Li, W., & Shi, J. (2010). Synthesis and phase evolution of LiNb0.6Ti0.5O3 powder via a sol–gel method. Particuology, 8(5), 463-467. https://doi.org/10.1016/j.partic.2010.05.001

Synthesis and phase evolution of LiNb_0.6Ti_0.5O₃ powder via a sol–gel method

Xia Wang ^a, Wei Li ^a *, Jianlin Shi ^{a b}

a School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
b Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China

10.1016/j.partic.2010.05.001

Volume 8, Issue 5, October 2010, Pages 463-467

Received 14 April 2009, Revised 13 June 2009, Accepted 7 May 2010, Available online 7 June 2010.

E-mail: liweiran@sh163.net

Highlights

Abstract

A simple sol–gel route was demonstrated for the synthesis of LiNb_0.6Ti_0.5O₃ (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 °C and then LiNbO₃ solid solution (LiNbO₃ ss) emerged at 500 °C. When calcined to 600 °C, the M-phase started to appear along with the decrease of TiO₂ and LiNbO₃ ss. Single M-phase could be formed at 700 °C, which is 300 °C 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.

Graphical abstract

Keywords

M-phase; Sol–gel process; Phase transition; X-ray diffraction

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