Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (2): 185-188.

• Articles • Previous Articles     Next Articles

Synthesis and Characterization of Cubic Zinc Titanate Doped with Lithium

YU Ran-bo1, ZHENG Ming-zhen1, CHEN Jun1, DENG Jin-xia1, LIU Gui-rong1 and XING Xian-ran1,2*   

  1. 1. Department of Physical Chemistry,
    2. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, P. R. China
  • Received:2009-04-02 Revised:2009-05-19 Online:2010-03-25 Published:2010-05-25
  • Contact: XING Xian-ran. E-mail: xing@ustb.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.20731001, 20871015 and 50725415), the Program for New Century Excellent Talents in University, China(NCET), the National Basic Research Program of China(No.2007CB613601) and the Program for Changjiang Scholars and Innovative Research Team in University, China(No.IRT0708).

Abstract:

Cubic (Zn,Li)TiO3 powders were synthesized through a modified sol-gel route including the Pechini process via a three-step heat treatment. The as-synthesized (Zn,Li)TiO3 could be stable up to 1000 °C. The dielectric constant and dielectric loss tangent of all the synthesized (Zn,Li)TiO3 samples at different measurement frequencies showed the similar tendency. At the same frequency, the dielectric constant and the dielectric loss tangent of (Zn,Li)TiO3 samples decreased and increased, respectively, with the lithium doping content increase. The as-prepared (Zn,Li)TiO3 showed improved microwave dielectric properties, and its maximum value of quality factor could reach 34000 GHz.

Key words: Cubic zinc titanate; Lithium doping; Sol-gel preparation; Pechini process; Microwave dielectric property